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None of the others in town have these, thought it was unusual enough to share

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[-] only0218@sh.itjust.works 2 points 10 months ago
[-] johannesvanderwhales@lemmy.world 7 points 10 months ago

I'm guessing a magnet that engages if it's given a kill signal? RFID for location. Must have some sort of battery too.

[-] madcaesar@lemmy.world 2 points 10 months ago

Battery? Holy shit that would be a pain in the ass to maintain.

[-] Bronco1676@lemmy.ml 2 points 10 months ago* (last edited 10 months ago)

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.

[-] Crack0n7uesday@lemmy.world 2 points 10 months ago

You ever seen those invisible dog fences? Once it crosses an electrical barrier it triggers an alarm of sorts and in this case I assume it engages some sort of brake mechanism.

this post was submitted on 18 Dec 2023
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