Atmel/Microchip T5557 cards are low frequency 125KHz read/writable RFID credentials which can be programmed to emulate many popular access control system cards. The T5577 chip is capable emulating the following access control credential cards:
- HID Prox
- Indala Flexpass
- Kantech ioProx
- Swatch EM41xx
- Applied Wireless AWID
- Jablotron
- Farpointe Data Systems
- Honeywell NexWatch
- Noralsy
- eTag SecuraKey
- Nedap
- Viking
- Presco
- VISA2000
... and more. Most field teams opt to interact with these credentials using a tool such as the Proxmark3, but it is also possible to program and configure T5577 cards with smaller tools like the Flipper Zero, Blue Cloner Gun, etc.
