My guess, this is like a loyalty card, but it gives you points for been there rather than buying and it also works on different shops. If that's the case the w

My guess, this is like a loyalty card, but it gives you points for been there rather than buying and it also works on different shops. If that's the case the way of selling it, as if it is the best thing for your health, its obnoxious. They probably won't care if you walk of drive by as long as your mobile reaches the shop wifi so the customer -the shop- pays. Location data selling, as other commenter noted, is a real possibility too. EDIT: After reading the more complete bbc article seems like I was wrong. They say to be using gps and acelerometer data, no idea how it doesn't get hacked to death since both can be faked easily. They also mention that location data won't be for sale. I'm still sceptical.