Most shoppers know that they're being watched. Security cameras are common in stores. But did you know that some other cameras may be watching the way you do your shopping? Believe it or not, there's an actual science involved in watching you buy and trying to make you buy more. As correspondent Bill Ritter found, it's a high-stakes, high-tech hunt for information on how to make you "shop till you drop."Anchor: Connie Chung and Hugh Downs
Correspondent: Bill Ritter Airdate: May 10, 1999
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