Arduino RFID Kit

RFID means radio-frequency identification. RFID uses electromagnetic fields to transfer data over short distances. RFID is useful to identify people, to make transactions, etc…

You can use an RFID system to open a door. For example, only the person with the right information on his card is allowed to enter. An RFID system uses:

• tags attached to the object to be identified, in this example we have a keychain and an electromagnetic card. Each tag has his own identification (UID).

• two-way radio transmitter-receiver, the reader, that send a signal to the tag and read its response.