When LS meets RL: Part 2

I've never been in a library that didn't find it necessary to provide signage of the Bleeding Obvious type. And I don't believe there is a household in the Western World that has teenagers who are not Selectively Blind, as well as Selectively Deaf, regardless of how technologically proficient they are.

So here's a helpful little sign that is about to go into service. You are welcome to adapt to your own needs, be it at home or at work.