Submission + - You May Have Forgotten Foursquare, but It Didn't Forget You (wired.com)
Foursquare knows where their phones are in real time, because it powers many widely used apps, from Twitter and Uber to TripAdvisor and AccuWeather.
Ask someone about Foursquare and they’ll probably think of the once-hyped social media company, known for gamifying mobile check-ins and giving recommendations. But the Foursquare of today is a location-data giant. During an interview with NBC in November, the company’s CEO, Jeff Glueck, said that only Facebook and Google rival Foursquare in terms of location-data precision.
You might think you don’t use Foursquare, but chances are you do. Foursquare’s technology powers the geofilters in Snapchat, tagged tweets on Twitter; it’s in Uber, Apple Maps, Airbnb, WeChat, and Samsung phones, to name a few.