Our wallets, ourselves

From MSNBC:

Three or four days a week, Darren Hiers gets lunch at a Sterling convenience store near the car dealership where he works. He grabs a chicken sandwich and a soda and heads to the checkout counter, where a little gadget scans his index finger and instantly deducts the money from his checking account. Hiers doesn’t have to pull out his wallet to buy lunch — and if it were up to him, he’d never have to write a check or swipe a credit card again.

The finger scan used at the shop in Sterling, known as a biometric payment system and made by a Herndon firm, is just starting to be installed at convenience stores and supermarket chains around the country, another step in a revolution that is turning the human body into the ultimate identification card.

Two questions… when will this become mandatory, and who will require it of the masses?