# Troubleshooting

The scene camera and eye cameras are not being recorded or recognized in the companion app!

  1. Make sure the headset is connected to the companion device using the included USB-C to USB-C connector cable. Note that other 3rd party USB-C to USB-C cables might not work robustly.
  2. Make sure OTG is enabled. If it is not enabled you should see a red USB sign in the top-left of the companion app's home screen. You can find instructions on how to enable it here.

The scene video or gaze data cuts off at some point in a recording!

  1. Make sure the companion app is locked to the Android app overview. If it is not locked, you should see a red lock symbol in the top-left of the companion app's home screen. You can find instructions on how to lock the app here.
  2. Make sure that permissions to access the USB devices are given and "Use by default for this device" is enabled. If those permissions are not given or not set to be used by default, you should get prompts asking you for permissions every time you reconnect the glasses to the companion device. Thus to fix this reconnect your glasses and for every prompt that shows up give permission and check the "Use by default for this device" checkbox.
  3. Make sure you are using the included black USB-C to USB-C connector cable rather than another 3rd party cable. Such cables are available in a wide variety of quality and using cables of insufficient quality can lead to loss of connection.

A red LED is blinking on my Pupil Invisible glasses!

The LED blinks to try to get the wearer's attention. The red blinking LED indicates that there is a problem that may affect further recording. To get details, open the Pupil Invisible Companion app to view an error description.

The potential problems include:

  • Low battery on the Companion Device.
  • Low storage space remaining on the Companion Device.
  • Unstable connection to the Pupil Invisible Glasses device during a recording.