From TheTrackR's Site:
How it works
The wireless coin sized StickR TrackR device attaches to commonly misplaced items. Using an iPhone or Android app, the user can quickly locate their lost or misplaced items in seconds by causing the item to ring, using the app's hot & cold sensor, or via the last known GPS coordinates. Watch the Video Below to Learn More.
Why give them away?
That's simple. Unlike regular GPS devices, TrackR uses a new form of GPS technology called Crowd GPS. When an item goes missing with a TrackR device attached, all TrackR enabled phones will begin to search for the item. If another user comes nearby the item, that user's phone will ping our server which will then update the item's owner with the new GPS coordinates. The more people in our network, the more real time the GPS updates will be and the better our devices will work. Help us build the next GPS network.
Very interesting concept. The downside that I see is that we would need a TrackR every mile or so - so if this does take off we could get a very efficient peer to peer GPS.
Get One For Free (Referral Link) (Direct)
LowEndTalk http://ift.tt/1nRASGz Free TrackR (Crowded based GPS locator) Web vps hosting server Linux - Windows webvps.blogspot.com