Have a look at the following article from eetimes.com. "Now starting a three-month trial phase involving about 40 cars, the system has a two-stage alarm. If a thief bypasses the first alarm, an alert is delivered via e-mail to the owner's mobile phone that an unauthorized person is in the driver's seat......The system follows up the e-mail with one-minute updates of where the car is via the GPS sensor."
August 07, 2001 (tech,gadgets)
Car Security system using i-mode