| 摘要 |
A card for a trolley lock includes a card body that can be stored inside a wallet to allow users to carry it around easily. Surfaces of the card can be printed of information such as an advertisement, a pattern, a catalog, and daily supplies. The card further includes an unlocking member having an unlocking portion of a round-coin shape. A shank portion of the unlocking member is pivotably connected to the card body to allow the unlocking member to be moved between a first position and a second position. When the unlocking member is in the first position, the unlocking portion is folded into the card body; and when the unlocking member is in the second position, the unlocking portion sticks out of the card body and is adapted to be inserted into a slot of a trolley lock to release the trolley lock.
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