Yeah, at least in germany these are all just magnets. And outside of the store there is a long metal line, and when you roll over it, the wheel with the magnet completely locks.
This happened to me as a kid, and it was sheer impossible moving the cart back to the store.
I’m guessing a magnet that engages if it’s given a kill signal? RFID for location. Must have some sort of battery too.
Battery? Holy shit that would be a pain in the ass to maintain.
Yeah, at least in germany these are all just magnets. And outside of the store there is a long metal line, and when you roll over it, the wheel with the magnet completely locks. This happened to me as a kid, and it was sheer impossible moving the cart back to the store.