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IDRW stands for ID Read and Write, and this is an app that works on Android 4.1+

An app used for USB-HID 125kHz ID reader.

This application will not be published to the Application Store (Play Store, etc).

Therefore here is the only source to get this app.

https://aka.pw/usb-125khz-idrw

In addition, you can buy the compatible hardware from the following link.

• https://item.taobao.com/item.htm?id=536120855237
• https://item.taobao.com/item.htm?id=21709847262
• https://item.taobao.com/item.htm?id=26713568868

Android USB Host documention

• https://developer.android.com/guide/topics/connectivity/usb/host

Protocol references

• docs/IFDProtocol.md
• https://blog.csdn.net/TonnyBrown/article/details/75200601 (PDF)
• https://github.com/charlysan/pyrfidhid
• https://github.com/merbanan/rfid_app
• https://github.com/Simpleyyt/libfunction_so_usb
• https://github.com/zhangyoufu/gzgiant_LF_RFID_Reader
• EM4100 Protocolhttp://www.priority1design.com.au/em4100_protocol.html
• T5557 Protocolhttp://www.priority1design.com.au/t5557_rfid_transponder.html

Chip product pages

• EM4200https://www.emmicroelectronic.com/product/lf-animal-access-ics/em4200
• EM4305https://www.emmicroelectronic.com/product/lf-animal-access-ics/em42054305
• EM4450https://www.emmicroelectronic.com/product/lf-animal-access-ics/em4450
• T5551https://www.microchip.com/ATA5551M
• T5575https://www.microchip.com/ATA5575M1
• T5577https://www.microchip.com/ATA5577M1C