Hotel key cards are used with door card readers that are installed on each door lock and can be programmed to open specific doors in defined time periods.
Modern hotel access management systems enable grouping the door locks with a number of users, providing access to the same group, as well as an audit trail of who opened the door and when. For instance, one group can have access to open the hotel lobby door or the staff toilets, but only within a certain period in the day.
The most likely authorized users for a personal room hotel key card are the guest and the room maintenance service.
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