Don't let your car full of gadgets get stolen, like over 30,000 vehicles in Japan last year. Here's a gadget that may help: Kato Denki is offering a new Stealth Tracking System that places a PHS-based tracking device in your car. Utilizing the Willcom PHS network, the tiny 31-g box lets you (or the cops) track your car's location by PC or mobile phone should the need arise, for a rental cost of JPY735/month. It'll report details right down to the car's current address and the route it traveled, even in garages and basements that give GPS pause, says Kato Denki. For an extra JPY105/month, the service will send an alert when the car is detected outside of a prescribed geographic region.
http://www.kato-denki.com/products/stealth/index.html (Japanese)