On Board Diagnostic (OBD, it is also called Enhanced OBD in European) is installed in many vehicles for on board self-diagnostic and reporting purpose. OBD systems give the owner or a technician access to the state of health information for various vehicles.

A car door differs from a calculator or a phone in that it makes sense to press more than one key at a time.

LIN or CAN communications have represented standards in automotive communication systems for quite a while now.

Although now-a-days cars are mainly built around a sturdy CAN network, and FlexRay is gradually making its way on the market, the LIN is still in place and it is present in many simple automotive electronic control units.