Dear Disturbed: To answer your parenting question first -- it's hard to imagine a child expressing persistent and prurient curiosity about a necktie graphic on a hotel "do not disturb" sign.

Sometimes you have to take almost-drastic measures in order to enforce the Do Not Disturb sign.

Hotels across the country are making sure their “Do Not Disturb” signs are getting the point across with flair.No longer are the signs just plain printed black and white door hangers.

“Do Not Disturb” mode lets smartphone users silence notifications — and signals that they may take a while to respond.