Have you been chipped, yet? You could be soon, for the Food & Drug Administration has now cleared the way for a Florida corporation, Applied Digital Solutions, to market a tiny electronic device called VeriChip that is surgically implanted under the skin of your arm or hand. Don't worry, says the corporation soothingly, being chipped doesn't hurt you, and it's really for your own good. For example, they say, if you have an accident, your implanted chip could contain vital medical information that could be accessed by an ambulance crew (assuming the crew has bought a hand-held, chip-reading scanner, which...