As you all may know, our own Larry has stepped over into the realm of Borg and has had an RFID tag implanted in his hand. To learn more about Larry's implant and for more resources check out the links below!
The implant: This is the tag Larry had implanted into his hand.
The reader: The read-only reader that enables Larry's tag to interface with different devices.
The software for the reader:
And some forums for "tagged" people
and the author of a great book:
and his book: