Retailers using technology to combat checkout lines

A Wall Street Journal story published Wednesday examined how retailers like Kroger, Walmart and McDonald’s are using technology to keep shoppers from waiting in long lines as they checkout. Kroger grocery stores, for instance, installed infrared cameras, which detect body heat, at the entrances and checkout lanes. The technology, long used by the military and law enforcement, has reduced the average shopper’s waiting time from four minutes to 26 seconds. Read the full store here.