Where does this come from, and can I check it?

Interlocking coin mechanisms incentivize shoppers to return trolleys to parking stacks. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Supermarket trolley locks require coins to encourage bay returns

Interlocking coin mechanisms incentivize shoppers to return trolleys to parking stacks

Supermarket coin-lock mechanisms connect shopping trolleys together with short metal chains in parking bays. Inserting a coin or token releases the lock key, while returning the trolley to a bay stack re-engages the mechanism and ejects the coin, reducing abandoned carts and trolley loss.

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: shopping, retail, locks

Supermarket trolley locks require coins to encourage bay returns: the short answers

Where does this come from, and can I check it?: Interlocking coin mechanisms incentivize shoppers to return trolleys to parking stacks. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.