Why did I check into a hotel without an ID card and get photographed at the front desk?

According to the regulations of the public security department, you must register your ID card and upload your identity information to the public security department. If you don't have your ID card, the front desk will take your picture, send your name and photo (ID number) to the public security department for review, and go through the check-in formalities for you. This is the requirement of the public security department, otherwise you will be punished.