What Secrets Your Phone Is Sharing About You – WSJ.com

What Secrets Your Phone Is Sharing About You – WSJ.com.
Fan Zhang, the owner of Happy Child, a trendy Asian restaurant in downtown Toronto, knows that 170 of his customers went clubbing in November. He knows that 250 went to the gym that month, and that 216 came in from Yorkville, an upscale neighborhood.

And he gleans this information without his customers’ knowledge, or ever asking them a single question.

Businesses are tracking their customers and building profiles of their daily habits using a network of startups that have placed sensors in restaurants, yoga studios and other sites. Chris Gilpin, founder of one such site, Turnstyle, joins the News Hub.

But Turnstyle is among the few that have begun using the technology more broadly to follow people where they live, work and shop. The company’s dense network of sensors can track any phone that has Wi-Fi turned on, enabling the company to build profiles of consumers lifestyles.

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