Things your smart phone can replace -3

1. 3. YOUR CAR KEY
   Using GPS-enabled smartphones as navigators or using applications to locate where your car is parked is fairly common among the technologically aware. But how about locking and unlocking your car using your smartphone? Or even starting an engine with a tap on your smartphone screen.This remote key comes in the form of the Viper SmartStart app for iOS, Android and BlackBerry smartphones. But it requires you to have the Viper Smart Start GPS device that costs around $400 (about Rs 21,200). You need to download the free app and pair it with the GPS device.
   Install the Viper SmartStart security system in your car, connect your phone to the system in your car and authenticate using the GSM network. The app can also be used to heat or cool your car remotely and, of course, locate where you've parked it. Some apps, such as Trapster, can even alert you of roadway hazards and police speed traps.