An Arduino, a spent roll of toilet paper, magnet wire, and a few passive components are what’s needed to build this RFID spoofer. It’s quick, dirty, and best of all, simple. However ...

Security researcher [Fran Brown] sent us this tip about his Tastic RFID Thief, which can stealthily ... 12 AA batteries and a custom PCB using an Arduino Nano to interpret the reader’s output.