RFID and NFC: cards, readers, frequencies, and security basics

Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify objects.

RFID tags are made out of two pieces:

• a microchip (an integrated circuit which stores and processes information and modulates and demodulates radio-frequency (RF) signals).
• an antenna for receiving and transmitting the signal.

According to operating frequency RFID tags can be:

Devices

• open_in_new Flipper Zero .