Consumer B Gone

[SWFu]

I recently bought one of those TV-B-Gone things to play with and on my searches I came across this:

Consumer B Gone

Any one tried it?

[Rkiver]

Oooh so tempting..I may try that at my local supermarket just to see if it works.

[beakmyn]

While this is the first time in a telephone I've seen it on instructables where they lock and entire row of carts at once.

[barry99705]

I've never seen carts like that in real life anywhere. Must be a British/Europe thing.