Its an App that applies NFC to consumer electronics, it can lock and adjust devices connected through NFC. Available functions include preventing children from using the device, adjusting device parameters, and reading and displaying device data on the APP. ●It can read the remaining power and count function of the device.●The parameters modified in App can be saved to the device.●Mobile phones without this App will jumps to the specified page.●Mobile phones that have installed this App will prompt you to open the App.●Interface is simple and easy to operate.