Do-It-Yourself RFID / IEEE Spectrum, February 2007
http://www.spectrum.ieee.org/mar07/4936
"A few years ago when Amal Graafstra first began chronicling his efforts to live in a key-free world by implanting radio-­frequency identification chips in his hands, his chip hacks generated lots of geeky Internet buzz. He compiled a book of RFID tricks. And then his girlfriend also agreed to get implants - RFID ones - so they could share cars and homes and computers with keyless, passwordless abandon. Could Valentine’s Day RFID specials be far behind?. Graafstra’s experiments in domestic chipping are entertaining, but they point to some of the larger issues that are upon us as human RFID tagging becomes ubiquitous - first as passports, drivers’ licenses, and medical bracelets, and then as implantable devices. What happens when people and their activities can be tracked and inventoried in much the way that Wal-Mart candy bars are today? Who’s allowed to hack what and know what about each one of us?"