The Linking application is designed to connect Linking-compatible BLE (Bluetooth Low Energy) devices with corresponding service applications. Users can manage various devices and apps to cater to their specific needs. The app centralizes the setting and management of link information between devices and service applications, enhancing user experience and functionality.

Key features include the ability to manage the presence and details of cooperation between devices and service applications, calculate the approximate distance between the device and smartphone in three levels (near, slightly near, far), and facilitate the exchange of various information such as notifications and sensor data between the service app and devices.