The intitial concept of a chip implanted under the skin is actually a need ed function for a lot of people. Diabetics, people with extream alergies to some drugs, and others that have hidden conditions that medical personnel should be aware of before administering emergiency drugs are but to name a few.

But.........I would be worried where it will lead to. Not only through the data base, but by monitoring people as they pass through entrances and exits to buildings. Police getting scanners to check you out on the roadside to see if you are safe to approach. Scanning individuals before approving their loan to prevent premature deaths that would cause a loss to the loan company.