A small state college in remote western South Dakota might soon introduce the first technology that can allows shoppers pay by pressing their fingerprints onto a pay pad, rather than swiping a credit card.
Two shops on the School of Mines and Technology campus, 25 miles from Mount Rushmore, are experimenting with a futuristic science called Biocryptology — a mix of biometrics (using physical traits for identification) and cryptology (the study of encoding private  information).