My parents (and my extended family + friends) have been using signal since the Snowden leaks.
All I had to do was ask :)
It's not really a hard app to use either, I had a few calls from them when they introduced the PIN stuff and when I or someone else have switched phone but it's not comprehensible. My parents are closing in on 80 now.
And those are also very good questions since the PIN thing was new and new things could indicate being hacked, and people changing their public key is a thing that Signal does seem to try to de-emphasize as a strong security signal so I'm almost more impressed they noticed it and were concerned.
It sounds like your parents are very unusually observant! I have had coworkers much younger than that who cannot be bothered to read messages like that.
My parents (and my extended family + friends) have been using signal since the Snowden leaks.
All I had to do was ask :) It's not really a hard app to use either, I had a few calls from them when they introduced the PIN stuff and when I or someone else have switched phone but it's not comprehensible. My parents are closing in on 80 now.