Morris Mbetsa, an 18 year old self-taught inventor with no formal electronics training from the coastal tourist town of Mombasa on the Indian Ocean in Kenya has invented the "Block & Track", a mobile phone-based anti-theft device and vehicle tracking system.
The real-time system uses a combination of voice, DTMF and SMS text messages over cell-based phone service that allows control of some of a vehicles' electrical systems including the ignition.
Another feature of the system is the capacity to poll the vehicle owner by mobile phone for permission to start, as well as eavesdrop on conversation in the vehicle. Mbetsa is now looking for funding to commercially develop his proof of concept and bring it to the market (video)
Good work, Morris. I hope you get your funding.