But for remote control, it stops after every few minutes, asking the "controlled" user to click on a button to continue. Not so practical in a few situations.
It always happens for me when accessing a Linux machine remotely. I can't find a screenshot now, so the next time I do it, I'll take one. It seems to be a security measure, to prevent someone from sharing remote access and then forgetting about it afterwards, but it makes for terrible usability.