somewhat off-topic, but if you'd like a hardware hack to disable the perpetual vehicle tracking in most modern cars, its actually a component of OnStar in GM vehicles. BMW Assist and others are patterned off the same technology as it all comes off the boat as a single embedded package from China. Its a cellular modem with a header for your OBD and ECM and data line for your info-tainment. its NOT built into the info-tainment.

on GM Vehicles You're looking for a metal box under the passenger side footwell, about the size of a cable modem. newer models have it in the trunk on the right or left side. You can remove the box, open it up, and inside will be a riser card with 2 or 3 connectors for a cell antenna. theres no SIM card.

Pull the riser and you wont get any error codes. Confirm the hack by pressing the OnStar button (or whatever your car calls it.) it will ring, but no one will pick up.

this will NOT affect your bluetooth ability OR your backup camera. thats actually part of the infotainment.

this WILL however disable the SOS button and the automated SOS on airbag deployment signal as the riser doesnt exist to make the call.