I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

Instructables user talk2bruce created the Arduino Internet Gizmo, a card reader that takes you to your favorite websites with a touch of an RFID tag. Instructables user talk2bruce created the Arduino ...

If your home or office has unique security challenges or you just want the geek cred you assemble a system to open a door via an RFID signal. At around $100 the parts aren't expensive, but in addition ...