Endoscope camera to connect with endoscope camera or any device like USB camera or Borescope camera there is many devices use external cam like inspection camera sewer. Check that before using this endoscope app sewer inspection camera: 1- if your device supports USB otg technology you can use many apps I recommend it this app USB otg checker 2- if Your USB camera is UVC-compatible How does it work endoscope app? The endoscope app for android - endoscope camera open your external Borescope