This device is probably not what a professional car thief would use. It may be used sometimes by someone messing around, but it’s a tool made for an introduction into different types of penetration (testing). It doesn’t do anything as well as a more dedicated device would, and it’s also not as customizable. If a car is vulnerable to this then it’s vulnerable to a lot more things. Also, if someone really wants to steal your car they don’t need this device specifically.