What does the smart door lock of the Furuite Hotel mean?

The difference between hotel management system, public security system and door lock business card printing system: I have been in the hotel management system industry for three or four years. During this period, I have heard of more than N hotels and guesthouses, large and small. When it comes to hotel software facilities, I confuse hotel management system, public security system and door lock business card printing system. 2 1 century, various industries are rising rapidly. ...