A look at these two videos should dispel that notion.

http://www.youtube.com/watch?v=Ccxiwu4MaJs

http://www.youtube.com/watch?v=LTq8TrA3hb4

Hard to blame Foursquare which you need to install while Google itself is doing it on Android phones to track when Android phones enter stores.

http://digiday.com/platforms/google-tracking/

Why stop there? Nomi tracks any smartphone user who enters a physical store, without their consent[0]: http://www.getnomi.com/

[0] Storeowners install the device, and customers have to opt-out: http://nomi.com/privacy/