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highqualitydude t1_j6jxpr6 wrote

Reply to comment by arlondiluthel in The hotel I stayed at had a punchcard as room key by warumdasdennjetzt

I remember going on a cruise in the 90's, the cabin keys looked just like that.

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arlondiluthel t1_j6jygk6 wrote

The biggest issue with these keys is that unless they're made to only insert one way (using a guide rail or notch or something), one key can potentially open two doors (if you can find the "mirror" lock.

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highqualitydude t1_j6k4d7y wrote

Is that really the biggest issue? I'd say the risk of people making copies is worse.

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