[TickleSteve]

Even with a mesh, devices still have to be authorised to get access. Just don't do that.

The more difficult option is if they come with cellular modems built-in, thus bypassing any of your infrastructure (which needs authorisation). That of course is technically possible, tho probably commercially unacceptable (modems cost ~15 to 20 dollars in bulk which is significant at smart-tv scales, not counting the data cost).

[lrvick]

More expensive IoT items like modern cars ship with factory activated cellular modem based tracking. Your options today are to buy older base model vehicles or learn to use a screwdriver and a soldering iron.

[jaywalk]

> Even with a mesh, devices still have to be authorised to get access. Just don't do that.

Nope, the whole point of Amazon Sidewalk is that it "just works." I don't think there's even a way to know what devices are connected, let alone any kind of authorization.