I wrote a paper last year on the uses of RFID in a natural environment with a focus on personal privacy protection. Bit of a mouthful, but I find the topic compelling to be honest. Browsing CNN.com I came across this recent story on RFID implants (no, not the Page 3 kind).
The article is based on a 29-year-old entrepreneur out of Vancouver (Canada) who along with 20 of his tech-friends have gotten RFID implants under the skin in their fingers, allowing them to interact with various RFID readers, part of which allows him to access his computer with a wave of his hand. This type of technology really knows no bounds. Can you imagine no passwords for your computer? No code for the house alarm, no keys for your car?