In some bars and clubs in various countries it's common for the door staff to take your ID, hold it up to the security camera, then return it before you can go

In some bars and clubs in various countries it's common for the door staff to take your ID, hold it up to the security camera, then return it before you can go in. I've seen it in France and the UK. The reason I've been given is so that anyone who causes trouble can be identified for potential prosecution.