Imo, the only solution is every device with an antenna must be legally required to put a manual off switch.
Cell service, wifi, Bluetooth, any future service. If it broadcasts it needs a physical off switch.
If I sold my car to a government official and they found out I had hidden a camera, microphone and GPS in the car, I'd get a visit from the FBI. Yet companies do it with impunity. Does the CEO of Subaru have recordings of Bernie Sanders driving in his car?
The current generation of the ford mustang Mach-e has its mobile telemetry cellular antenna wired to an isolated fuse that you can just pull out to kill it. I was astonished to learn how straight forward the process is supposed to be.
And each type of communication needs it's own switch. Don't let them pull some BS trying to make you enable all the hardcore tracking via a cell network just because you want to connect to Bluetooth.
For phones, Pinephone is very nearly this. The only thing is that GPS and cell service are on the same switch (because they're handled by the same chip on the board)
I'm not that nostalgic. Everything about my new car is better than my older cars. My 2023 minivan has a better 0-60 than my old V-8 Mustang while getting 2x the MPG. The only thing that is bad is the tracking.
For phones, Pinephone is very nearly this. The only thing is that GPS and cell service are on the same switch (because they're handled by the same chip on the board)