The key to safety in your home is the door in your home. The current residential trend is building apartments. Therefore, the front door is the real key. When the family is out, this time, the system will help you to automatically see the home. Once someone enters, the system will Automatically tells you that you do not need face recognition. You only need to look at your mobile phone to see who is in your home. If you don’t know it, you immediately know, which is more true than this judgment?