When cashiers use subtle tricks to pass free goods to friends: obscuring the bar code, slipping an item behind the scanner, passing two items at a time but charging for one.There simply aren't enough watchful human eyes to keep it from happening. So Big Y is using technology to block it — with implications far beyond dishonest cashiers,reports yahoo.
Mathematical algorithms embedded in the stores' new security system pick out sweethearting on their own. There's no need for a security guard watching banks of video monitors or reviewing hours of grainy footage. When the system thinks it's spotted evidence, it alerts management on a computer screen and offers up the footage.
The possibilities that researchers envision for this kind of technology have the ring of science fiction. Think of systems that spot abandoned packages on a train platform or alert an airline crew to a potential terrorist on board. Already, cities like Chicago have invested in "anomaly detection" cameras around town, linked to emergency headquarters. The city plans to announce this week that it is using the technology at Navy Pier, one of Chicago's best-known attractions.
Big Y's security system comes from a Cambridge, Mass.-based company called StopLift Inc. The technology works by scouring video pixels for various gestures and deciding whether they add up to a normal transaction at the register or not.
Officials in Chicago are already sold on the idea that cameras can detect a variety of threats. The city announced plans in 2004 to build a more intelligent surveillance system, using cameras to tip off police about possible terrorist threats such as an abandoned package or a truck circling a skyscraper.
IBM Corp. installed the technology last year. It's now out of the pilot stage and connected to hundreds of cameras around the city.
