Once again, the reason why you should buy an iPhone is as a substitute for your car keys. Viper SmartStart is an iPhone application that can be used to unlock / lock the car door, opened the luggage, the panic button to start the engine.
In additional to iPhone, iPod Touch turned out to also be used and the price of this application itself is free but to buy the Viper Smart System is a tool you need to pay U.S. $ 499