Here’s an open source RFID cloner design that is about the same size as a standard RFID key card. It doesn’t need a battery to capture key codes, just the magnetic field generated by an RFID ...

Radio-Frequency Identification (RFID) technology is everywhere—powering everything from contactless payments and inventory tracking to access control systems. But while RFID systems makes life more ...

These are RFID tags with batteries, but they communicate using the same backscatter technique as passive tags (tags with no battery). They use the battery to run the circuitry on the microchip and ...