Bluetooth might seem like a strange technology to use for location based services like Imity, but Bluetooth has some major advantages

1. It’s out there. No need to wait for GPS phones, RFID identifiers or smart carriers surfacing the location data they already have. Bluetooth is in million of phones already.
2. It’s enough. The key thing is what’s around you, not where your are geographically. Bluetooth does that kind of scanning very, very well.

tagged background and technology