While there are already remote lock and unlock devices and immobilizers in the market, car thieves continue to thrive, because of inherent limitations of the technology used in these devices. In contrast, Tcop, a security and tracking device from city-based iTrans Technologies works on proven GSM-technology to enhance the car/bike security system. It enables two-way communication between the car/bike and its owner. In case of theft it tracks the movement of the vehicle and provides valuable information that can help apprehend thieves / recover the vehicle.