unleashed-firmware/wiki/applications/125-kHz-RFID.md

Low-frequency proximity cards are widely used in access control systems around the world. It's pretty dumb, keeps only a short few-byte ID, and has no authentication mechanism, allowing it to be easily read, cloned, and emulated by anyone. A 125 kHz antenna is located on the bottom of Flipper's body.

Card types supported

Mandatory

• EM400x, EM410x, EM420x
• HID Prox (Proxcard, ISOProx, ProxKey). Not project Keysy told: Emulation not supported on multiClass readers, can still clone to rewritable
• HID Indala (Motorola Indala)
• Write to T55x7 compatible keycard/keyfob

Optional

• Noralsy (KCP3000)
• Farpointe Pyramid
• Keri (KC-10X, MT-10X, PKT-10X)
• Kantech ioProx
• DoorKing (DKProx) [Not DKProx Long Range]
• AWID (Low frequency only – CS-AWID, GR-AWID, KT-AWID, PW-AWID) Keysy note: (Emulation not supported, can still clone to rewritable)
• Radio Key (SecuraKey RKKT-01, RKKT-02)
• Viking
• Visa2000
• Schlage IBF iButton (RFID portion only)

Exotic

• Pet tags

Features

Reading

• Read specific card type, save ID
• card type detection (testing all protocols one by one, and read ID if found)

Emulation

• Emulate saved cards
• Enter card ID and card type manually to saved ID library You can also emulate the card by entering its ID manually, so you can easily send it to your friend in a text format. Thus, Flipper owners can exchange card dumps with each other remotely without ever touching a physical card.

Write card

• Write to T55x7 compatible keycard/keyfob

Links

• https://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/
• ESP8266 em4100 emulator
• https://www.kickstarter.com/projects/1708444109/rfidler-a-software-defined-rfid-reader-writer-emul
• https://github.com/AlexMalov/EasyKeyDublicatorRFID
• https://shop.hak5.org/products/keysy

UI

Main menu

• Read
• Saved Keys
• Enter manually