An idea for a startup or pet project – it would be interesting to create a blinking sign at the entrance to a room saying “camera on” or “in a conference call”, which would activate automatically on any messenger that switches to active status.
The simplest way is to monitor the CPU consumption of certain processes (zoom, teams, etc.), and turn on the sign “in a conference call” when a typical CPU load pattern occurs. Probably, one could also programmatically check the camera activity to light up the “camera on” sign

