Photo courtesy OnStar Corporation
OnStar is the most popular telematics service available in North America. As of May 2005, it had more than 4 million customers [ref]. But what is a telematics service? How does OnStar know where you are, and how can your car let the OnStar Call Center know that you've been in an accident? In this article, we'll explore the technology behind OnStar, find out how to use it, and learn about some of the controversy associated with it.