Had problems with faulty keyboards in the past too, never to be sure which keys were I pressed I had to type the password in a text file (much more insecure) and then paste it on the prompt. Of course this was never done in front of anyone, shoulder surfing was never an issue to begin with.

I agree that this move is good.

But you should not type sudo passwords on remote machine. Instead setup your machinr to have nopassword for special sdmin account and enable pubkey only authentication.

You could have avoided the worry completely. Ssh goes over tcp that does transport control (literally the “tc” in “tcp”) and this includes retransmission in case of packet loss.

If you are on a high latency ssh connection and your password does not register, you most likely mistyped it.