Amal Graafstra has implanted two rfid chips into his hands to permit himself keyless access to his computer, car and home. He's also written a book about the experience and the various rfid "toys" he's devised. This Valentine's Day, he and his girlfriend expressed a "modern declaration of their affection for each other, with implanted electronic chips that allow them unfettered access to each other's lives". Interested in something similar? The company Amal used is selling a kit. Though they don't actually recommend it for use with medical implants. So, cool, crazy or inevitable?