Why can blue-collar apartments only be unlocked with mobile phones?

the password lock security door is safer and more convenient than the ordinary security door.

Blue-collar apartment can only be unlocked by mobile phone because password lock security door is safer and more convenient than ordinary security door. It does not need a key, can be used flexibly, is simple to operate and has a relatively short unlocking time.

Remote unlocking is the function of directly and remotely unlocking the door lock through the mobile phone APP. Its principle is that the smart lock is connected to the gateway through the wireless module to realize the Internet of Things, and the user can control the smart lock to unlock through the networked mobile phone. At present, there are two types of remote unlocking, one is authorized unlocking, and the other is remote direct unlocking.