i think the problem is that in general, you can't assume that you'll be the only/last person to use that device, and you can't assume that the next person will

i think the problem is that in general, you can't assume that you'll be the only/last person to use that device, and you can't assume that the next person will understand the context in the way you do. I mean if you're doing it in your home, it's still kind of dodgy, but in a professional setting something like this definitely has no place, temporary or otherwise.