Requirement: Your team must upload their face data before they are able to use the facial recognition.
To get the best out of facial recognition, your team needs to make sure:
Their face should be in the circle or boundaries shown on the screen. If they stand too far or too close to the camera, they might not be recognised by the system.
They have a good source of lighting. This means they should not use facial recognition in a dark environment.
Any source of light (the sun or artificial lights) should not be behind them.
No face masks. Their entire face must be captured.
Glasses don't make a difference.
Hijabs and anything over their heads are fine as long as it does not block their entire face.
If there are any significant changes to your team member's faces, such as shaving their facial hair or growing a full beard, they might require to update their face data.
If you keep getting rejected by facial recognition and are unable to clock in, you need to redo/update your face data. You can do that on your Account settings if you're a team member, or on the person's profile if you're an owner/admin/manager.