Hotel room key card

According to different brands, some brands can make unlocking cards in the system. The master card can be used for every door lock authorized by your system. Even if the clock on your door lock is not synchronized with the system, the clock card is mainly used to adjust the time synchronization between the door lock and the system. For example, the time in your system is 12: 00, but the time on the door lock is 1 1: 30, so the card you made can't open your door lock, and it will be opened after half an hour. Emergency cards can be unlocked, but under normal circumstances, such cards are not used. As for the password card, I really don't know. I guess it's authorization or something. If you have an authorization card, you don't know which card is useful. The authorization card is mainly used to authorize the system or door lock. After authorization, the card made by your system can open the door lock authorized by the same authorization card. The authorization card is recommended to be kept properly. Because the authorization card is made in various ways, it needs to be purchased from the manufacturer again. Like your computer system crashing. Reinstall the system, secretly use the hotel door lock software, and don't use it at other times.