Kokuyo's Doko Line GPS panic button

Japan has a solid record of using RFID and GPS to track its kids, oldies and pets, but Kokuyo's Doko Line service ups the paranoia level a notch. Not only will it send an email to your Mum if you step outside a predefined 300m-5km zone, it'll also inform the support center at your local radio station in order to mobilize the community in a search for your wayward ass. Kokuyo plans to sell them to schools, care facilities and medical institutions to track the inmates, and the GPS box that comes with the service also includes a panic button and attack alarm. The unit will sell for Y29,800 ($270), with service costing you a further Y1,500 ($14) a month.