What the invigilator sees, stays in his/her head. They are not recording things with their eyes; this software is doing that (I'm not sure of the extent, how mu

What the invigilator sees, stays in his/her head. They are not recording things with their eyes; this software is doing that (I'm not sure of the extent, how much is client side vs server side, anonymization levels etc). However, I'm making that assumption based on the fact that if a person disputes something, a recording of the event would be required to ascertain the facts. That kind of information can be damaging in case of security breach; e.g. someone could have a habit of picking noses when lost in thought or changing clothes during the exam (they might reasonably do that in their home and not in a public exam with invigilator present). If such videos leak due to security breaches and catch circulation on internet, the people in them can be subject to ridicule or invasion of privacy online.