SD college tests fingerprint purchasing technology - Article Photos 1/7

Joseph Wright, associate vice president for research-economic development at South Dakota School of Mines and Technology, poses Feb. 15, 2013. Wright's college has installed two Nexus pay pads, which scan fingerprints and detects hemoglobin to allow people to buy from select shops on campus. About 50 students and four faculty members at the school are enrolled in the pilot program that uses Biocryptology -- or one's fingerprint and hemoglobin -- in place of cash or credit cards. Wright says the program has so far been successful and he hopes to spread it campus-wide soon. (AP Photo, Amber Hunt)