The product key CARDS have a number of other subtle differences as compared with traditional boxed products.

产品密钥卡较之传统的盒装产品有一些微妙的差异。

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These key CARDS can open only one lock and are issued to guest at check-in.

该级别为客人级别普通钥匙，一把钥匙只能开启相对应的一把锁，在登记入住时签发给客人。

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There are key chains, hotel key cards, bus head rests, free meals, journal ads, promotional talks, and websites.

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Moreover, the success of the original card design has spawned imitators from grocery club cards to transit cards to hotel key cards.

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Do hotels ever clean their key cards and if so how?

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