WTF?!? Impossible??? The friend could not simply right down the question on a piece of paper and post in anywhere on the internet?
They mean electronically. Not in a real life sense.
The data on the screen is encrypted and could not be shared in a digital form from the source.
I think what they are saying is that the friend couldn’t bring up what they just sent. For example, if you say you never got my email, I can forward my email to you for “proof”. In the scenario described, once I sent that email to you I lost access to that email.
I know they aren’t talking about email, but just using that as an easier point to make.