Basic RFID Operation

- A reader unit continuously sends out "Who are you" commands
- When a RFID tag recognizes a "Who are you" command, it responds by transmitting its unique ID number (typically 64-bit bits in size)
- The reader unit receives the unique ID number and sends it along to a control computer
- The control computer uses the ID number to:

- Unlock a door
- Start a car engine
- Deduct money from a bank account
- etc.