UPDATED 5:52 AM EST, February 22, 2013
RAPID CITY, S.D. (AP) — Futurists have long proclaimed the coming of a cashless society, where dollar bills and plastic cards are replaced by fingerprint and retina scanners smart enough to distinguish a living, breathing account holder from an identity thief.
What they probably didn't see coming was that one such technology would make its debut not in Silicon Valley or MIT but at a small state college in remote western South Dakota, 25 miles from Mount Rushmore.
