There is such a device in the car. As soon as the engine starts, he will receive a text message and turn it off. He can also receive a short message reporting the location of the car.

This is an element to locate the car, which is added at the back, just like in a taxi. Can't be cracked. First you need to know where it is installed, and then unplug the wiring harness on it. If it's a car rental company's car, don't bother, you won't find it unless you tear down the whole interior.