The instructions on the application in the APK permissions
1、android.permission.CAMERA
Through the phone's camera scanning the IPC and NVR and DVR equipment body qr code to add equipment operation;

2、android.permission.RECORD_AUDIO
By recording audio with IPC devices for voice intercom function;

3、android.permission.READ_PHONE_STATE
In application crashes, used to collect users mobile device information, convenient for application developers to quickly repair the bug.