Flipper Zero supports low-frequency (LF) radio frequency identification (RFID) technology that is implemented in access control systems, animal chips, and supply chain tracking systems. Unlike NFC cards, LF RFID cards usually do not provide high levels of security. This technology comes in many form-factors, such as plastic cards, key fobs, tags, wristbands, and animal microchips. Flipper Zero has a low-frequency RFID module capable of reading, saving, emulating, and writing LF RFID cards.

125 kHz RFID menu

You can access the 125 kHz RFID application from the Main Menu. In the application, you can read, save, emulate, write, and generate new LF RFID cards.

125 kHz RFID application menu



• Read — reads and saves LF RFID cards.
• Saved — lists saved cards that can be emulated and written on an empty card.
• Add Manually — generates new virtual LF RFID cards by entering the cards' ID.
• Extra Actions — allows to reading LF RFID cards with the preselected ASK or PSK coding.

125 kHz RFID hardware

Flipper Zero has a built-in RFID support with a low-frequency antenna located at the back of Flipper Zero. The STM32WB55 microcontroller unit is used for the 125 kHz RFID functionality.

125 kHz RFID hardware



The low-frequency 125 kHz antenna is placed on the Dual Band RFID antenna next to the high-frequency 13.56 MHz antenna.

Dual Band RFID antenna



Flipper Zero schematics

125 kHz RFID application source code