few months ago, he had a home-made device implanted under his skin by a tattoo artist, without an anaesthetic. when it's activated, it measures his body temperature and sends the data to his personal computer. >> what i'm doing is preparing the power coil to charge my device. we had to power it down for healing purposes but i've been able to power it up and connect it to a bluetooth and what have you. >> since having the device implanted, cannon has had to take medication to keep his body from rejecting it. he's already working on a much smaller implant in his basement. the new version is designed to also measure blood pressure, pulse and other levels as well. >> since the technology is here, somebody has to start experimenting with it. it doesn't seem like anybody in the medical community is interested in it. but i am. so, i just said, "why not?" >> cannon believes this technology will soon be used to automatically transmit medical data from millions of americans to insurance companies. the idea of an omniscient health industry doesn't faze him. >> i think it's reasonable to be afraid of thi