Sounds like a UIUX problem. Sign makers get about half a second to convince a rushed person to pause, between the moment the sign enters their field of view and

Sounds like a UIUX problem. Sign makers get about half a second to convince a rushed person to pause, between the moment the sign enters their field of view and the moment they're already through the door. If the sign is anything more than a large red STOP symbol and anything more than the words NOT AN EXIT and/or AUTHORIZED PERSONNEL ONLY, then I bet most people don't read it. I probably wouldn't, unless I was incredibly bored. Most signs are irrelevant to most readers and we are constantly inundated with them on every door and every hallway wall we walk down. If it was important it would follow internally recognized danger signage UIUX standards. Which usually just means a big symbol. Everything else is just another blurry bakesale announcement that flashed past our face.