After also reading the discussion in '17. How come this is trivially easy to make, very cheap and still we have a massive stolen car problem in Europe? Some cars in my country have >1% chance of getting stolen in a given year. The incentives must be off somewhere? This is a device that could only be triggered after theft, thus hardly any privacy concerns, and still give quite a good location (perhaps improved with glonass and other sattelites). They can't be found easily (so small, only transmissions after stealing) and placed on any given wire in the car. Seems only beatable by placing the car in a cage after theft.