Flipper Zero allows you to read, save, and emulate 125 kHz RFID cards. A 125 kHz RFID card is a transponder that stores a unique identification number. When scanned with a reader, 125 kHZ card transmits its ID number. Flipper Zero can read and save the ID number if the card has the supported protocol. On this page, you will learn how to read and emulate 125 kHz RFID cards with your Flipper Zero.

Reading procedure

To read and save the 125 kHz card's data, do the following:

1. Go to Main Menu → 125 kHz RFID.
2. Press Read, then hold the card near your Flipper Zero's back.

Hold the card in the center of your Flipper Zero's back



While reading, Flipper Zero switches between ASK and PSK codings every three seconds to read data from the 125 kHz RFID card.

Flipper Zero switches codings every three seconds



3. Once the reading is finished, review the card's data:

The captured data is displayed on the screen



4. To save the card, go to More → Save.

5. Name the card, then press Save.

If reading failed

• The card might be using NFC technology. → Read the card with the NFC application.
• Flipper Zero switches codings every three seconds. Some cards might not be read because it might be required up to 10 seconds to read data. → Read the card with the preselected ASK or PSK coding.

Reading with a preselected coding

Flipper Zero allows you to read 125 kHz RFID cards with the preselected ASK or PSK coding. To read and save the 125 kHz card's data with a preselected coding, do the following:

1. Go to Main Menu → 125 kHz RFID → Extra Actions.
2. Select Read ASK or Read PSK.
3. Apply the card to Flipper Zero's back.
4. After reading, go to More → Save.
5. Name the card, then press Save.

Emulating 125 kHz RFID cards

Flipper Zero can emulate saved 125 kHz RFID cards by doing the following:

1. Go to Main Menu → 125 kHz RFID → Saved.
2. Select the card you want to emulate, then press Emulate.

With Flipper Zero, you can emulate saved 125 kHz cards



3. Hold your Flipper Zero near the reader, the device's back facing the reader.

While emulating the 125 kHz card, hold your Flipper Zero near the reader