I have a compressor travel fridge. I've had it for about six years. The display died this summer, so I had a hard time knowing what temperature it was set to, or if it was even on. (Crotch goblins love to press buttons that go beep).

Anywho, I got a new display circuit for it with Bluetooth. The only reason I paired my phone to it is so others can't fiddle with the settings at the local campground.

Same thing with my e-bike. I don't want someone else pairing their phone with it and locking me out.