The "eAn Community" App is a software for managing Bluetooth door locks. The user performs initial settings (initialization, proofreading time, etc.) of the Bluetooth door lock, and adds, edits, and deletes management of the door lock area and users. The user information for opening the door is set in the door lock (such as setting the blacklist function). Users who are allowed to open the door can easily open the Bluetooth door lock with this app (such as: one-button door opening function).