[pc486] sent in his hack that uses an ATtiny85 to act like an EM4102, a chip used for RFID tags. Minimally, all that is needed is the AVR and a coil, but he recommends some filtering capacitors.

Now the device will act just as the original RFID tag did. It seems like this is a lot more user-friendly than the last RFID spoofer we looked at.

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