| LCARS | |
|---|---|
| Star Trek franchise element | |
LCARS-style desktop | |
| First appearance | Star Trek: The Next Generation |
| Created by | Michael Okuda[1] |
| Genre | Science fiction |
| In-universe information | |
| Type | Computer operating system |
| Affiliation | Starfleet |

In theStar Trekfictional universe,LCARS (/ˈɛlkɑːrz/; anacronym forLibrary Computer Access/Retrieval System) is a computeroperating system. WithinStar Trek chronology, the term was first used in theStar Trek: The Next Generation series.
The LCARSgraphical user interface was designed by scenic art supervisor and technical consultantMichael Okuda. The original design concept was influenced by a request fromGene Roddenberry that the instrument panels not have a great deal of activity on them.[2] This minimalized look was designed to give a sense that the technology was much more advanced than in the originalStar Trek.[2]
OnStar Trek: The Next Generation, many of the buttons were labeled with the initials of members of the production crew and were referred to as "Okudagrams."[1]

The LCARS interface is often seen used on aPADD (Personal Access Display Device), a hand-held computer.[3]
At seven-inch (180 mm), similarly sized moderntablet computers such as theNexus 7,Amazon Fire,BlackBerry PlayBook, andiPad Mini have been compared with the PADD.[4][5] Severalmobile apps were created which offered an LCARS-style interface.[6][7]
CBS Television Studios claims to hold thecopyright on LCARS. Google was sent aDMCA letter to remove theAndroid app called Tricorder since its use of the LCARS interface was un-licensed. The application was later re-uploaded under a different title, but it was removed again.[8]