The Foursquare application on an iPhone in front of a Starbucks in San Francisco. Photo: AP/Russel A. Daniels

Foursquare pioneered the trend of ‘checking-in’ to a place — now it sells your data to companies

Foursquare provides technology, data and other business services to some of the biggest brands in the world, including Apple, Microsoft and Samsung

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The Foursquare application on an iPhone in front of a Starbucks in San Francisco. Photo: AP/Russel A. Daniels
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