Signal for On-Line Exams

Have any of you used Signal for on-line exams?

My understanding is that Signal allows users to keep their names and contact information private. It supports video connections as well. If all that is true, then Signal should be good for conducting on-line exams. Certainly it would make me much less hesitant. Do any of you know about Signal?

I use signal with any other friend of mine who is willing to use it. It's supposedly very secure and I'm getting kind of paranoid about some of the other messaging protocols. Especially like the Facebook Messenger. I can't see why it wouldn't be good for private things like this. Problem is you have to find someone to do the virtual exam LOL!

What about whereby?