A friend visited, and the community just changed its intelligent access control. How can we let him in? I don't think this is a problem. If there is a security guard at the gate, you can tell the security guard that he can let him in. Without security, the problem is easy to solve. You can open the door yourself. You can open the smart entrance guard. You can open the door and your friends can come in. Your friend finished at your house, and then you told him to send him out. This is not a difficult thing, which also shows that you are very enthusiastic about your friends.