Seriously, this is not a thing. It doesn't even begin to make sense. It's made up.
If you work in a factory with time cards that need to be punched in, and you punch in a buddy's who is late, that's a thing -- a very risky thing if you get caught, since it's fraud.
But the idea that you'll give a coworker your password so they can boot up and log in and somehow make it look like you're online...? Not a thing. And doesn't even make sense today when you can just open your chat client on your phone anyways and be present there. We've been in an era of remote work for a long time now.