>common radio technology isn't good enough to isolate the driver's seat

Look man, you don’t know what you’re talking about. UWB can easily position a device in a vehicle. BT direction finding is also quite promising.

But I’m not suggesting any advanced locating, let alone a jammer (lol). I’m literally just suggesting an NFC pad with a phone “seat belt” for the primary device connected to the infotainment. Car makes a beeping noise until you rest the phone in the safe spot. That’s it. Nothing any more extreme than existing seat belt and speed limit warnings (which save lives despite their nuisance).

t. Actual automotive engineer for a major OEM that works on infotainment & mobile software, Bluetooth, UWB, & future RF