To be honest I can honestly say this wouldn't happen to me. well not the asking part but... the hands-on part? Can't happen.
Why? Cos I'm such a paranoid freak about my shit getting stolen that, even if it's to make a head call, I do NOT leave my computer unattended. If there's not someone around whom I trust to watch it for me, I close it up and take it with me.
And even then, it's password protected - with capital letters, small letters, numbers & symbols. even at home. even when i lived alone. i'm just too use to having a password on that i don't bother stopping the behavior.