US20120031981A1 - Visual identification tag deactivation - Google Patents

Abstract

A device for deactivating an RFID portion on an identification tag and indicating that the RFID portion is deactivated. The present invention addresses current privacy concerns regarding potential use of RFID technology after the point of sale. The device for deactivating the RFID portion of an identification tag provides visual indication that the RFID portion is deactivated. The visual indication occurs without the use of additional equipment or electronics. The visual indication component of the present invention is easy to interpret, so that a viewer will be able to quickly determine whether the RFID portion of the identification tag has been deactivated.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• The present application is a Continuation of U.S. patent application Ser. No. 12/718,711, filed Mar. 5, 2010; which is a Continuation of U.S. patent application Ser. No. 11/954,746, filed Dec. 12, 2007, now U.S. Pat. No. 7,701,345, issued Apr. 20, 2010; which is a Continuation of U.S. patent application Ser. No. 11/190,646, filed Jul. 27, 2005, now U.S. Pat. No. 7,327,261, issued Feb. 5, 2008. The disclosures of the referenced applications and patents are incorporated herein by reference.
FIELD OF THE INVENTION
• The present invention is directed to automatic identification devices and more specifically to providing a visual indication of the dynamic state of an identification device, such as an RFID device.
BACKGROUND OF THE INVENTION
• The use of Electronic Article Surveillance, Radio Frequency Identification, and electronic security tag technology (hereinafter collectively referred to as ‘RFID’) is becoming increasingly prevalent in manufacturing, inventory control, retail and residential settings. First used in the Battle of Britain to recognize friendly fighter planes, RFID technology is now emerging as a valuable tool in our everyday lives. For example, RFID technology can be used by manufacturers or retailers to instantaneously track product inventories and thereby adjust to specific inventory needs. Similarly, RFID technology can be used by automobile commuters to pay highway tolls without interrupting their commute. RFID technology can also be used by pet owners to provide reassurance that pets are readily locatable, regardless of lost collars.
• RFID technology involves the transmission of information through radio waves. A typical RFID system includes an RFID tag and an RFID reader/encoder. The RFID tag includes a circuit chip and an antenna attached to the circuit chip. The circuit chip and antenna are generally thin, flexible, and mounted to a flexible dielectric substrate. Antennas have numerous configurations and each is structured generally to broadcast electromagnetic energy to a distant reader. RFID chips can be programmed to store a variety of information. For example, RFID chips often include retail product identification such as a product serial number. In other applications, relatively more complex information may be provided such as biometric information on an employee ID badge.
• RFID technology provides efficient, instantaneous communication between a reader and an RFID tag without directed near-field scanning as is commonly required in more conventional automatic identification technologies (e.g., bar-code, optical scanning, etc.). Further, the cost of RFID technology has recently dropped making it particularly useful in open supply chain applications, where disposable identification technologies are desired. However, in spite of these benefits, and perhaps because of them, RFID technology has produced discomfort, fear, and paranoia in some consumers.
• Many consumers fear that RFID technology could be used in an Orwellian manner. For example, some consumers are wary that retailers may use RFID tags to covertly track consumer purchasing habits, interests, or behavior by placing hidden RFID readers throughout a retail location such as a shopping center. The readers could detect RFID tags provided in various previously purchased articles (e.g., wallets, purses, clothing, etc.) located on the consumer's body or in the consumer's possession, thereby remotely tracking, logging, and analyzing the consumer's movements as they proceed through the shopping center. Although potentially benefiting retailers in terms of understanding, for example, which retail displays are effective at drawing consumer interest, many consumers view the above use of RFID technology as an unwarranted invasion of privacy. Accordingly, consumer groups have mobilized to prevent such use of RFID technology. Such groups have strongly discouraged use of RFID technology and have, in some cases, proposed legislation aimed at requiring retail stores employing RFID technology to install equipment that allows consumers to disable or de-activate RFID tags.
• In view of both the consumer objections referenced above, and the increasing use of RFID technology in manufacturing, inventory control, retail and residential settings, there is a need for a device associated with an RFID tag that is capable of deactivating the RFID tag in a manner that is visually apparent to a consumer or other viewer. Such a device should be simple, economical, efficient, and should ensure deactivation to the satisfaction of the consumer or other viewer.
BRIEF SUMMARY OF THE INVENTION
• The present invention addresses the above needs by providing a device for deactivating identification tags in a permanent and visually perceptive manner. The deactivation may occur manually or with the use of a deactivation device, and the visual indication occurs without use of additional equipment or electronics. Such visual indication is easy to interpret, so that a person viewing it will be able to quickly determine whether the identification tag is active or has been disabled. Identification tags capable of visually indicating this state (i.e., active or disabled) according to various embodiments of the present invention are simple, economical, efficient, and capable of wide use with many different products.
• In general, the present invention provides an identification tag for visually indicating deactivation of at least a part of an electronic circuit portion of the identification tag. The electronic circuit portion stores an identification associated with the identification tag, and a deactivation indicating portion is capable of visually indicating deactivation of at least a part of the electronic circuit portion. The visual indication may be an indicating color or an indicating indicia, and may occur under normal or alternate lighting conditions.
• In other specific embodiments, the electronic circuit portion may be placed between two layers such that when the layers are separated, as when a user manipulates one of the layers or uses a tool or other mechanism to at least partially separate the layers, at least a part of the electronic circuit portion of the identification tag is deactivated. A deactivating indicating portion then visually indicates, such as through an indicating color or indicia, that at least a part of the electronic portion has been deactivated.
• An identification tag of another embodiment of the present invention may be deactivated by removing a coating that is adjacent to an electronic circuit portion such that at least a part of the electronic circuit portion is deactivated. The process of removing the coating then reveals a visual indication of deactivation.
• An identification tag of still another embodiment of the present invention may be deactivated using a pull-tab assembly that is designed to deactivate at least a part of an electronic circuit portion when the pull-tab assembly is removed from the identification tag. The process of removing the pull-tag triggers a deactivation indicating portion, which may be a two-part color generating system that results in visual indication of the deactivation.
• Thus, the present invention provides a device for deactivating an RFID portion of an identification tag and indicating that the RFID portion is deactivated. The device for deactivating the RFID portion provides visual indication that the RFID portion is deactivated. The visual indication occurs without the use of additional equipment or electronics and it is easy to interpret, so that a viewer will be able to quickly determine whether the RFID portion of the identification tag has been deactivated.
BRIEF DESCRIPTION OF THE DRAWINGS
• Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
• FIG. 1 is a top view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with one embodiment of the present invention;
• FIG. 1A is a cross sectional view of the identification tag depicted inFIG. 1;
• FIG. 1B is a cross sectional view of the identification tag depicted inFIG. 1A;
• FIG. 1C is a top view of the identification tag ofFIG. 1, wherein the RFID portion is visually deactivated by separating a first layer from a second layer;
• FIG. 2 is a top view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 2A is a top view of the identification tag depicted inFIG. 2, wherein the RFID portion is deactivated;
• FIG. 2B is a top view of the identification tag depicted inFIG. 2, wherein the RFID portion is deactivated and wherein such deactivation is visually detectable;
• FIG. 3 is a top view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 4 shows a top view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 5 shows a top view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 6 shows a top view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 6A shows a top view of the identification tag depicted inFIG. 6, wherein part of a removable coating has been removed;
• FIG. 6B shows a top view of the identification tag depicted inFIG. 6, wherein the RFID portion is deactivated and wherein such deactivation is visually detectable;
• FIG. 7 shows a cross sectional view of the identification tag depicted inFIG. 6;
• FIG. 8 shows an exploded perspective view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 9 shows a perspective view of the identification tag depicted inFIG. 8;
• FIG. 10 shows a cross sectional view of the identification tag depicted inFIG. 9;
• FIG. 11 shows a detail cross sectional view of a central portion of the identification tag depicted inFIG. 10;
• FIG. 12 shows a detail cross sectional view of a central portion of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 13 shows a perspective view of the identification tag depicted inFIG. 9, wherein the tape assembly has been removed to deactivate the RFID portion;
• FIG. 14 shows a top view of the identification tag depicted inFIG. 13, wherein the RFID portion is deactivated and wherein such deactivation is visually detectable through an indicating color;
• FIG. 15 shows a top view of the identification tag depicted inFIG. 13, wherein the RFID portion is deactivated and wherein such deactivation is visually detectable through an indicating indicia;
• FIG. 16 shows an exploded perspective view of an identification tag capable of visually detectable deactivation of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 17 shows a perspective view of the identification tag depicted inFIG. 16;
• FIG. 18 shows a cross sectional view of the identification tag depicted inFIG. 17;
• FIG. 19 shows a top view of the identification tag depicted inFIG. 17, wherein the RFID portion has been deactivated and wherein such deactivation is visually detectable through an indicating color;
• FIG. 20 shows a top view of the identification tag depicted inFIG. 17, wherein the RFID portion has been deactivated and wherein such deactivation is visually detectable through an indicating indicia;
• FIG. 21 shows an exploded perspective view of an identification tag capable of visually detectable deactivation of a portion an antenna of an RFID portion in accordance with another embodiment of the present invention;
• FIG. 22 shows an exploded perspective view of an identification tag capable of visually detectable deactivation an RFID portion in accordance with another embodiment of the present invention;
• FIG. 23 shows a perspective view of the identification tag depicted inFIG. 22;
• FIG. 24 shows a cross sectional view of the identification tag depicted inFIG. 23;
• FIG. 25 shows a detail cross sectional view of a central portion of the identification tag depicted inFIG. 24;
• FIG. 26 shows top view of the identification tag depicted inFIG. 23, wherein the RFID portion has been deactivated and wherein such deactivation is visually detectable through an indicating color;
• FIG. 27 shows a top view of the identification tag depicted inFIG. 23, wherein the RFID portion has been deactivated and wherein such deactivation is visually detectable through another indicating color; and
• FIG. 28 shows a top view of the identification tag depicted inFIG. 23, wherein the RFID portion has been deactivated and wherein such deactivation is visually detectable through an indicating indicia.
DETAILED DESCRIPTION OF THE INVENTION
• The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.
• The present invention provides a device for deactivating an RFID tag. The present invention also provides a visual indication that the RFID tag has been successfully deactivated. In one embodiment, the RFID tag deactivation and accompanying visual indication occur simultaneously, such that a user may verify that the RFID tag has indeed been deactivated. In other embodiments, however, it may be appropriate to introduce a delay between RFID tag deactivation and the visual indication of such deactivation. In either case, visual indication of deactivation according to various embodiments of the invention is easy to interpret, simple, economical, and accurate as will be apparent in view of the disclosure provided below.
• Referring collectively toFIG. 1-1C, one embodiment of the present invention includes anidentification tag10 having afirst layer11 adhered to adeactivation indicating portion50. In the depicted embodiment, thedeactivation indicating portion50 comprises asecond layer12. For purposes of the foregoing specification and appended claims the term “identification tag” refers to any system that includes a memory or identity and mechanism for communicating remotely with a reader/encoder, such as remotely detectable tags that incorporate RFID or other similar technologies. For example, identification tags may include EAS tags, magnetic tags, RFID tags, RFID labels, smart cards, optical communication tags, capacitive tags, and the like. In the depicted embodiment, thefirst layer11 includes atab16 typically disposed at one corner. Thetab16 is comprised of a flap of material extending from a portion of thefirst layer11 such that a user, or a deactivation device may manipulate thetab16. In other embodiments, thetab16 may be attached to a portion of thefirst layer11. In the depicted embodiment, thesecond layer12 of theidentification tag10 includes anRFID portion13 having anantenna15. The depictedantenna15 is a single layer antenna disposed in a concentric pattern surrounding acircuit chip14, however, in alternate embodiments, other antenna structures may be used including multi-layered antennas and antennas of any shape. Theantenna15 may be constructed by any method as is known in the art, such as by printing, etching, or by deposition.
• It should be noted that the term deactivation device as used herein is defined as any material, device, mechanism, tool, and/or combinations of the above that disrupts the operability of the electrical circuit, either mechanically or otherwise. The deactivation device may include, but is not limited to “tear tapes”, severing cords, fuses, and rudimentary tools. The deactivation device may also include attachment of a portion of the electrical circuit to one component and another portion of the electrical circuit to another component, where the other component is separable from the first component.
• In various embodiments, thesecond layer12 of theidentification tag10 may include an adhesive (not shown) on abottom surface18 for securing theidentification tag10 to a retail product orother item19. In one embodiment, thefirst layer11 may be adhered to thesecond layer12 by a second adhesive (not shown) that is less aggressive than the first adhesive such that thefirst layer11 may be separated from thesecond layer12 without removing thesecond layer12 from theitem19. It should be noted that in other embodiments, a patterned adhesive could be used so as to provide tamper evidencing.
• FIG. 1B shows theidentification label10 having thefirst layer11 peeled away from thesecond layer12. In one embodiment, a severing device, such as acord17, is located adjacent to at least a part of theRFID portion13 of theidentification tag10. More particularly, in the depicted embodiment, thesevering cord17 is disposed beneath thecircuit chip14 andantenna15 as shown. In alternate embodiments, however, thesevering cord17 may pass exclusively beneath either the antenna or circuit chip (not shown). Also, thesevering cord17 may be embedded in adielectric substrate9 that supports theRFID portion13 as shown. In alternate embodiments, thesevering cord17 may be fixed beneath theRFID portion13 by an adhesive or other coating.
• In the depicted embodiment, thesevering cord17 is constructed of nylon similar to a fishing line; however, in alternate embodiments, the severing cord may be constructed of such materials as plastics, polymers such as polypropylene, metal wire, fiber strings, woven nylon, Mylar®, paper, or other strong materials. In other embodiments, thesevering cord17 may comprise theantenna15. In various embodiments, afirst end17A of thesevering cord17 may be attached totab16 offirst layer11 such that when thefirst layer11 is peeled from thesecond layer12, thesevering cord17 remains attached to thefirst layer11. In this regard, a user desiring to deactivate theRFID portion13 of theidentification tag10 simply manipulates thetab16 and at least partially peels thefirst layer11 away from thesecond layer12. This could be done manually and may also be done with a deactivation device capable of manipulating thetab16 so as to at least partially peel thefirst layer11 away from thesecond layer12. Thesevering cord17 is pulled upwardly with thefirst layer11, thus tearing through theRFID portion13 and mechanically severing thecircuit chip14 and/orantenna15 as shown inFIG. 1C. Advantageously, severingcords17 used in accordance with the depicted embodiment permanently deactivate theRFID portion13 of theidentification tag10.
• In another embodiment of the present invention, thesecond layer12 is coated by an environmentallyreactive dye22. Upon peeling and removal of thefirst layer11, thesecond layer12 becomes exposed to the environment. The environmentallyreactive dye22 is designed to react with an environmental stimulus such as oxygen, nitrogen, carbon, moisture, temperature, light, and the like. In one embodiment, the reaction may occur approximately as thereactive dye22 is exposed to the environmental stimulus, however in other embodiments, the reaction may occur after a delay, or in still other embodiments, the reaction may occur after exposure to a combination of environmental stimuli. In alternate embodiments, the deactivation device itself may provide the environmental condition that triggers the reaction, such as by generating heat.
• In the depicted embodiment, the reaction between thedye22 and the environmental stimulus produces a color change in thedye22 that results in an indicating color that indicates to a user that theRFID portion13 of theidentification tag10 has been deactivated. The indicating color may be any color, such as one that is distinguishable from the color of an exterior surface of the previously removedfirst layer11 so that a user may readily identify a deactivated tag from one in which the first layer has yet to be removed. For example, in various embodiments the environmentallyreactive dye22 may produce a red, orange, or black, “deactivated” color against a pale (e.g., white, yellow, etc.) exterior first layer color. The above color scheme may of course be reversed as will be apparent to one of ordinary skill in the art in view of the above disclosure. Alternatively, the color change may be a color that is visible under alternate lighting conditions, such as under ultraviolet or infrared light.
• In an alternate embodiment, the environmentallyreactive dye22 may be disposed in a pattern to form indicating indicia (not shown) such as text or figures. The indicating indicia may also include certain symbols, or any combination of colors, text, figures, and symbols. In one embodiment, the indicia may include words that clearly indicate to a viewer that theRFID portion13 has been successfully deactivated, including but not limited to “DISABLED,” “DEACTIVATED,” and “SAFE.” Upon peeling thefirst layer11 from thesecond layer12, the environmentallyreactive dye22 reacts to the environmental stimulus as referenced above thereby revealing the indicia to a user. In alternate embodiments, the text may be printed in reverse, so as to be readable using a mirror or through a bottle.
• In another alternative embodiment, the second layer may include preprinted indicating colors and/or indicia such that when the first layer is removed, the preprinted colors and/or indicia are revealed.
• FIGS. 2-2B depict anidentification tag110 capable of visual deactivation in accordance with another embodiment of the present invention. The depictedidentification tag110 includes anRFID portion113 having acircuit chip114 and anantenna115. In one embodiment, theRFID portion113 may include afuse119 disposed between thecircuit chip114 and theantenna115. In other embodiments, thefuse119 may be disposed anywhere along theantenna115 as will be apparent in view of the disclosure provided below. The depictedidentification tag110 includes anexothermic dye125 that coats an area proximate thefuse119. In one embodiment, theexothermic dye125 may completely cover thefuse119 as shown.
• In various embodiments, thefuse119 is structured to produce heat or light when theidentification tag110 is selected for deactivation by a user. In one embodiment, thefuse119 may be a weakened or narrowed portion of theRFID antenna115 that shorts out when theidentification tag110 is placed in an electromagnetic field over a certain magnitude. As thefuse119 is shorted or otherwise activated, thefuse119 produces heat or light as referenced above and thereby triggers an exothermal chemical reaction that changes the color of theexothermic dye125 as shown inFIG. 2 andFIG. 2B collectively. The color change may produce any color that will indicate to a user that theRFID portion113 of theidentification tag110 has been deactivated.
• Other embodiments of the present invention are shown inFIGS. 3-6. Common to each of these embodiments areidentification tags210,410,510,310 each having anRFID portion213,413,513,313. TheRFID portions213,413,513,313 includecircuit chips214,414,514,314 andantennas215,415,515,315.FIG. 3 depicts anidentification tag210 having adye portion226 in accordance with one embodiment of the invention. In the depicted embodiment, thedye portion226 is comprised of anexothermic dye225 and is structured to cover only a portion of thesubstrate209 of theidentification tag210. In one embodiment, thedye portion226 may possess a color substantially similar to the substrate of theidentification tag210 before deactivation of theRFID portion213. After deactivation of theRFID portion213, the exothermic reaction described above causes theexothermic dye225 to change color, thereby visibly distinguishing thedye portion226 from the remainder of theidentification tag substrate209. Such embodiments may be useful for products that have colors that may be confusingly similar to the color chosen to indicate deactivation, thus providing a contrasting border that surrounds a deactivatedRFID portion213. In alternate embodiments of the present invention, it may be advantageous to choose a color change that will allow another automatic identification method to be used after visual indication of RFID deactivation has taken place. One such embodiment is depicted inFIG. 4. In the depicted embodiment, theidentification tag410 also includes abarcode421. Upon deactivation of theRFID portion413 as described above, anexothermic dye425 causes theidentification tag410 to change color, thereby visibly indicating that theRFID portion413 is deactivated. The color change resulting from the exothermic reaction is such that thebarcode421 can still be read by a barcode scanner (not shown) after the exothermic reaction has taken place. An example of such a color may be yellow, however the color change may be any color change that will allow a barcode scanner to read thebarcode421 after the exothermal reaction has taken place. As noted above, in other embodiments the color change may be visible under alternate lighting conditions, such as under ultraviolet or infrared light. Also, the color change may only be located in certain parts of the identification tag. Embodiments such as this may be useful in applications that may require later identification of an item using other automatic identification technologies, such as barcode scanning after the RFID circuit has been disabled.
• This embodiment is of particular importance in instances where redundancy is needed. If the RFID tag becomes faulty for some reason, a user could deactivate the tag which will reveal the bar code for subsequent identification of the article to which the tag is connected.
• FIG. 5 shows another embodiment of the present invention. In the depicted embodiment, upon deactivation of theRFID portion513 by heating afuse519, an exothermic reaction with anexothermic dye525 causesindicia522, such as text or figures, to appear on the surface of theidentification tag510 in substitution of a color change as described above. In another embodiment, theindicia522 may be appear in conjunction with a color change as described above. In one embodiment, the indicia may include words that clearly indicate to a viewer that theRFID portion513 has been successfully deactivated, as described above.
• FIGS. 6-7 show another embodiment of the present invention. In the depicted embodiment,RFID portion313 is supported bysubstrate309, which is similar to that described above.Substrate309 supports acircuit chip314 that is connected toantenna315. In the depicted embodiment,antenna315 is located in a layer abovecircuit chip314. Adeactivation indication layer351 serves as a deactivation indication portion and is located betweencircuit chip314 and315, as shown inFIG. 7. Aremovable coating320 is also shown inFIGS. 6-7. Theremovable coating320 may be any coating that is capable of being mechanically removed by a user or deactivation device. In the depicted embodiment, for example, theremovable coating320 may be removed with the edge of a coin. Such removable coatings are known in the art and typically comprise foil or ultraviolet curable coatings. In the depicted embodiment, theremovable coating320 surroundsantenna315, although in other embodiments, theremovable coating320 may be in close proximity to theantenna315, such as coveringantenna315 or located belowantenna315. When a user removes theremovable coating320,antenna315 becomes detached fromcircuit chip314, thereby deactivating theRFID portion313. Upon removing theremovable coating320, an indicatingindicia322 and/or an indicating color (not shown), which has been pre-preprinted ontodeactivation indicating layer351, is revealed. As noted above, the indicating indicia may include color, text, figures, symbols, or combinations of the above. In the depicted embodiment, the indicatingindicia322 is a universal “no” symbol characterized by a red circle and slash, overlapping a symbol referencing radio waves.
• Another embodiment of the present invention is depicted inFIGS. 8-11. In the depicted embodiment, anidentification tag610 is shown having multiple layers that together visually indicate deactivation when theidentification tag610 has been deactivated. In the depicted embodiment, theidentification tag610 generally includes anRFID portion613 and adeactivation indicating portion650. As shown inFIG. 10, the deactivation indicating portion includes a dual indicatinglayer671 and a deactivation device. In the depicted embodiment, the deactivation device is atape assembly655. As will be discussed in detail below, theRFID portion613 is deactivated when thetape assembly655 is removed from theidentification tag610.
• In general, theRFID portion613 is located between afirst layer611 and asecond layer612. In the depicted embodiment, thefirst layer611 comprises anouter layer616, and thesecond layer612 comprises the dual indicatinglayer671 and adielectric substrate layer609. Theouter layer616 is constructed of a destructible vinyl or polypropylene material that is designed to fracture upon tearing, however it may be constructed of any material capable of severing when thetape assembly655 is removed from theidentification tag610. Adielectric substrate layer609 is included to support theRFID portion613. It should also be noted that in other embodiments, theouter layer616 and thedielectric substrate layer609 may be omitted without deviating from the spirit of the present invention. In the depicted embodiment, theRFID portion613 and thetape assembly655 are located between theouter layer616 and the dual indicatinglayer671, and theRFID portion613 is adhered to the dual indicatinglayer671. It should be noted that in order to simplify the figures,FIG. 10 (as well as other like figures throughout) shows thefirst layer611 separated from theRFID portion613, however in practice, theouter layer616 contacts and is adhered to theRFID portion613.
• As shown inFIG. 8, thetape assembly655 includes a pull-tab656 and atape portion657. Thetape portion657 is made of a polypropylene material as is common in commercially available “tear tapes.” However, the tape portion may be made of any material suitable for severing the layers of theidentification tag610, including polyester, cellophane, laminates, and other materials including those described with respect to the severing cord above. The pull-tab656 may be integral with thetape portion657 or it may be a separate component that is attached to the pull-tab656 such that when thetape assembly655 is removed from theidentification tag610, thetape portion657 remains attached to the pull-tab656. As such, the pull-tab656 may be made of a polypropylene film or other like material, including those described with respect to thetape portion657, that allows for removing thetape assembly655 from theidentification tag610. In the depicted embodiment, at least a part of thetape assembly655 is attached to theRFID portion613. Thetape portion657 may be attached in close proximity to thecircuit chip614 with an adhesive658. In the depicted embodiment, thetape portion657 is attached above thecircuit chip314. It should be noted that although theidentification tag610 is depicted as having a particular geometry, theidentification tag610 may have any shape that is suitable for supporting theRFID portion613, including but not limited to a triangular shape and a circular shape. Additionally, although the pull-tab656 is depicted as having a particular geometry, it may also have any shape that is suitable for a user or deactivation device to grab in order to remove thetape assembly655 from theidentification tag610.
• As noted above, in the depicted embodiment, thedeactivation indicating portion650 also includes a dual indicatinglayer671. The dual indicatinglayer671 comprises a two-component color generating system as is commonly known in the commercial paper industry with regard to pressure sensitive copying paper and carbonless papers, as generally described in U.S. Pat. Nos. 2,730,456 and 2,730,457 to Green et al., the entire contents of which are hereby incorporated by reference. These patents describe two-component color generating systems in which an encapsulated ink reacts with a reactant coating to produce coloration. The capsules may be specifically designed to react with an associated reactant coating. When the capsules are ruptured, the ink reacts with the reactant coating to produce coloration. Along these lines, the dual indicatinglayer671 of the embodiment of the present invention depicted inFIGS. 8-11 generally comprises a two-component color generating system. Referring toFIG. 11, a layer ofcapsules661, containing indicatingink665, is applied to a top surface of the dual indicatinglayer671. Likewise, areactant coating662 is also applied to the top surface of the dual indicatinglayer671. In several embodiments, thereactant coating662 may coat areas of the top surface of the dual indicatinglayer671 that containcapsules661, or thereactant coating662 may coat areas surrounding various areas containing thecapsules661. In an another embodiment depicted inFIG. 12, the dual indicatinglayer671 may be substituted with a two-layer system comprising a top indicating layer751 and a bottom indicating layer752. In this embodiment, the top indicating layer751 includescapsules761 containing indicatingink765 on a bottom side of the top indicating layer751, and the bottom indicating layer752 includes areactant coating762 on a top side of the bottom indicating layer752.
• Referring to the embodiment depicted inFIGS. 8-11, and as indicated above, theRFID portion613 is located between theouter layer616 and the dual indicatinglayer671. Thetape portion657 of thetape assembly655 is attached to the top of thecircuit chip614 of theRFID portion613 with an adhesive658. In various embodiments, thesecond layer612 of theidentification tag610 may include an adhesive (not shown) on a bottom surface for securing theidentification tag610 to a retail product or other item. In various embodiments, a user desiring to deactivate theidentification tag610 manipulates the pull-tab656 and pulls thetape assembly655 across theidentification tag610. The pull-tab656 may be manipulated manually or through the use of a tool or other similar mechanism capable of manipulating the pull-tab656. As such, the pull-tab656 may includevarious indicia659 instructing a user regarding how to pull thetape assembly655 in order to deactivate theidentification tag610. Likewise, the top surface of theouter layer616 may also include indicia (not shown) instructing a user regarding deactivation of theidentification tag610.
• In the depicted embodiment, upon pulling thetape assembly655 across theidentification tag610, thecircuit chip614 remains attached to thetape portion657 such that thecircuit chip614 is detached from theantenna615, thereby permanently deactivating theRFID portion613 of theidentification tag610, as shown inFIG. 13. As thetape assembly655 is removed from theidentification tag610, thecircuit chip614 ruptures thecapsules661 containing the indicatingink665 underneath thecircuit chip614. As thecapsules661 containing the indicatingink665 are ruptured, the released indicatingink665 is then exposed to thereactant coating662 included on the dual indicatinglayer671 in the area in which thecapsules661 were ruptured. The reaction between the indicatingink665 and the reactant then produces a visual indicatingcolor673, as shown inFIG. 14. The color may be any color, and may be a color that is distinguishable from the color of an exterior surface of the identification tag such that a user may readily identify a deactivated tag from one in which thepull tag assembly655 has not been removed from theidentification tag610. For example, in various embodiments the indicatingcolor673 may be a red, orange, or black, “deactivated” color against a pale (e.g., white, yellow, etc.) exterior first layer color. The above color scheme may of course be reversed as will be apparent to one of ordinary skill in the art in view of the above disclosure.
• Alternatively, the reaction between the indicatingink665 and thereactant coating662 may produce an indicatingindicia674. The indicatingindicia674 may include text or figures that clearly indicate to a viewer that theRFID portion613 of theidentification tag610 has been successfully deactivated, including but not limited to “DISABLED,” “DEACTIVATED,” and “SAFE,” as shown by example inFIG. 15.
• Another embodiment of the present invention is depicted inFIGS. 16-18. In the depicted embodiment, anidentification tag810 is shown having multiple layers that together visually indicate deactivation when at least a part of anRFID portion813 of theidentification tag810 has been deactivated. The depicted embodiment is generally similar to the embodiment depicted inFIGS. 8-11, however, in this embodiment, thetape portion857 is attached below thecircuit chip814 with an adhesive858. Additionally, thetape portion857 is also adhered to a dual indicatinglayer871, which contains a similar two-part color generating system as the embodiment depicted inFIGS. 8-11. It should be noted that in other embodiments of this invention, the dual indicatinglayer871 may be substituted with a two-layer system as described above.
• In various embodiments, a user desiring to deactivate theidentification tag810 manipulates the pull-tab856 as described above and pulls thetape assembly855 across theidentification tag810 in a similar manner as the embodiment depicted inFIGS. 8-11. Upon pulling thetape assembly855 across theidentification tag810, thecircuit chip814 remains attached to thetape portion857 such that thecircuit chip814 is detached from theantenna815, thereby permanently deactivating theRFID portion813 of theidentification tag810, in a similar manner as that shown inFIG. 13. In the depicted embodiment, as thetape assembly855 is removed from theidentification tag810, thetape portion857 ruptures the capsules861 containing the indicating ink865 underneath thetape portion857 of thetape assembly855. As the capsules861 containing the indicating ink865 are ruptured, the released indicating ink865 is then exposed to the reactant coating862 included on the dual indicatinglayer871 in the area in which the capsules861 were ruptured. The reaction between the indicating ink865 and the reactant coating862 then produces a visual indicatingcolor873, as shown inFIG. 19. As noted above, the color may be any color, and may be a color that is distinguishable from the color of an exterior surface of the identification tag such that a user may readily identify a deactivated tag from one in which thetape assembly855 has not been removed from theidentification tag810. Alternatively, the reaction between the indicating ink865 and the reactant coating862 may produce an indicatingindicia874. The indicatingindicia874 may include text or figures that clearly indicate to a viewer that theRFID portion813 of theidentification tag810 has been successfully deactivated, as described above, and as shown by example inFIG. 20.
• Another embodiment of the present invention is depicted inFIG. 21. In the depicted embodiment, anidentification tag910 is shown having multiple layers that together visually indicate deactivation when at least a part of anRFID portion913 of theidentification tag910 has been deactivated. The depicted embodiment is generally similar to the embodiments depicted above, however, thetape portion957 is attached adjacent to a portion of theantenna915, with thetape portion957 also being adhered to a dual indicating layer971 (or, in other embodiments, a two-layer two-component color generating system as described above). In various embodiments, a user desiring to deactivate theidentification tag910 simply manipulates the pull-tab956 and pulls thetape assembly955 across theidentification tag910, in a similar manner as described above. Upon pulling thetape assembly955 across theidentification tag910, a portion of theantenna915 located adjacent to the tape portion951 is severed from the remaining portion of theantenna915, thereby changing the frequency response of theRFID portion913 of theidentification tag910. In the depicted embodiment, as thetape assembly955 is removed from theidentification tag910, the tape portion952 ruptures the capsules961 containing the indicating ink965 underneath the tape portion952 of thetape assembly955. As the capsules961 containing the indicating ink965 are ruptured, the released indicating ink965 is then exposed to the reactant coating962 in a similar manner as described above. Visual indication similar to that described above may then be produced to indicate that a portion of theRFID portion913 has been deactivated.
• Another embodiment of the present invention is depicted inFIGS. 22-25. Theidentification tag1010 of the depicted embodiment is similar to those embodiments described above, however theRFID portion1013 is located between afirst layer1011, which comprises anouter layer1016 and atop indicating layer1051, and asecond layer1012, which comprises thebottom indicating layer1052 and adielectric substrate layer1009. As described above, theouter layer1016 and thetop indicating layer1051 may be constructed of a destructible vinyl or polypropylene material that is designed to fracture upon tearing, however each or both of theouter layer1016 and thetop indicating layer1051 may be constructed of any material capable of severing when thetape assembly1055 is removed from theidentification tag1010. As noted above, in other embodiments, theouter layer1016 anddielectric substrate layer1009 may be omitted without deviating from the spirit of the present invention.
• Thedeactivation indicating portion1050 of the depicted embodiment includes thetop indicating layer1051 and thebottom indicating layer1052. Together thetop indicating layer1051 and thebottom indicating layer1052 create a separated two part two-component color generating system. Referring toFIG. 25, a layer ofcapsules1061 containing indicatingink1065 is applied to a bottom surface of thetop indicating layer1051. Likewise, areactant coating1062 is applied to a top surface of thebottom indicating layer1052.
• TheRFID portion1013 is located between thetop indicating layer1051 and thebottom indicating layer1052. In the depicted embodiment, thetape portion1057 of thetape assembly1055 is attached to the top of thecircuit chip1014 of the RFID portion, however as described above, thetape portion1057 may alternatively be located below theRFID portion1013. In the depicted embodiment, upon pulling thetape assembly1055 across theidentification tag1010, thecircuit chip1014 remains attached to thetape portion1057 such that theRFID portion1013 is deactivated. As thetape assembly1055 is removed from theidentification tag1010, thetape portion1057 severs thetop indicating layer1051. As thetop indicating layer1051 is severed,capsules1061 containing the indicatingink1065 are ruptured along tear lines1081 (shown inFIGS. 26-28). The released indicatingink1065 is then exposed to thereactant coating1062 included on thebottom indicating layer1052. In one embodiment, relativelysmall capsules1061 are used on the first indicatinglayer1051 such that the reaction between the indicating ink and the reactant produces a visual indicatingcolor1073 along thetear lines1081, as shown inFIG. 26. In another embodiment,larger capsules1061 are used on thetop indicating layer1051 such that the indicating ink is exposed to a greater area of thereactant coating1062 on thebottom indicating layer1052 resulting in an indicatingcolor1073A covering a larger area, as shown inFIG. 27. Alternatively, the reaction between the indicatingink1065 and thereactant coating1062 may produce an indicating indicia1074, as shown inFIG. 28.
• In response to privacy concerns with regard to the increased use of RFID technology, the present invention provides a device for deactivating an RFID portion located on an identification tag, and also provides visual indication that an RFID portion has been deactivated. Deactivation of the RFID portion triggers a visual indication that the RFID portion is deactivated, thus resulting in an accurate representation of RFID deactivation. So designed, deactivation of an RFID portion will be apparent to a viewer without the use of additional equipment or electronics.
• Many modifications and other embodiments of the invention set forth herein will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (20)

1. An identification tag comprising:

an RFID portion; and

a deactivation portion;

wherein the deactivation portion is configured to deactivate at least part of the RFID portion.

2. The identification tag ofclaim 1 wherein the frequency response of the RFID portion is changed in response to the deactivation portion deactivating at least part of the RFID portion.

3. The identification tag ofclaim 1, wherein the RFID portion comprises:

a circuit chip portion; and

an antenna portion.

4. The identification tag ofclaim 3, wherein the deactivation portion is configured to deactivate at least a part of the antenna portion.

5. The identification tag ofclaim 1, wherein the deactivation portion comprises a visual indication of deactivation, and wherein the visual indication of deactivation is presented in response to the deactivation portion deactivating at least a part of the RFID portion.

6. The identification tag ofclaim 1, wherein the deactivation portion comprises a fuse.

7. The identification tag ofclaim 6, wherein at least a part of the RFID portion is deactivated in response to the fuse being broken.

8. The identification tag ofclaim 7, wherein the fuse is configured to provide a visual indication of deactivation of at least part of the RFID portion.

9. The identification tag ofclaim 1, further comprising:

a visual indication of deactivation, wherein the visual indication of deactivation is presented in response to at least a part of the RFID portion being deactivated.

10. An identification tag comprising:

an electronic circuit; and

a deactivation device;

wherein the deactivation device is configured to deactivate at least a part of the electronic circuit portion.

11. The identification tag ofclaim 10, wherein the electronic circuit portion comprises an RFID portion.

12. The identification tag ofclaim 12, wherein the RFID portion comprises a first frequency response, and wherein the RFID portion comprises a second frequency response, different from the first frequency response, in response to at least a part of the RFID portion being deactivated.

13. The identification tag ofclaim 10, wherein the deactivation device is a fuse.

14. The identification tag ofclaim 10, wherein the deactivation device is a tear strip.

15. An identification tag comprising:

an RFID portion; and

a deactivation device, wherein the deactivation device is configured to deactivate at least a part of the RFID portion in response to a user manipulating the deactivation device.

16. The identification tag ofclaim 15, further comprising a visual indication of deactivation, wherein the visual indication of deactivation is presented in response to a user manipulating the deactivation device.

17. The identification tag ofclaim 16, wherein the RFID portion comprises a circuit chip and an antenna.

18. The identification tag ofclaim 17, wherein the deactivation device is a mechanism by which at least a portion of the antenna is separated from the circuit chip.

19. The identification tag ofclaim 15, wherein the deactivation device is a fuse.

20. The identification tag ofclaim 15, wherein the deactivation device is a tear strip.

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