Implanted biochips could be the tool of Big Brother, but they are more likely to become the treatment of choice for the physician of the 21st century. Paranoid ranting is a staple on the internet, and the topic of biochips is a particular favorite. Not if you believe Bible prophecy.
Reality is somewhat less alarming.
A simple ID chip is already walking around in tens of thousands of individuals, but all of them are pets. The chips are the size of an uncooked grain of rice, small enough to be injected under the skin using a syringe needle. They respond to a signal from the detector, held just a few feet away, by transmitting out an identification number. This number is then compared to database listings of registered pets. He has a large-scale model, but for miniaturization and regulatory approval he will need a substantial amount of cash.