In Bid to Sway Sales, Cameras Track Shoppers

Many stores and the consultants they hire are using the gear not to catch shoplifters but to analyze and to manipulate consumer behavior. And while taping shoppers is legal, critics say it is unethical to observe people as if they were lab rats. They are concerned that the practices will lead to an even greater invasion of privacy, particularly facial recognition technology, which is already in the early stages of deployment.

Companies that employ this technology say it is used strictly to determine characteristics like age and gender, which help them discover how different people respond to various products. But privacy advocates fear that as the technology becomes more sophisticated, it will eventually cross the line and be used to identify individual consumers and gather more detailed information on them.

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