I have noticed that there doesn't seem to be a system in place, or if there is, it is seldom used. I noticed in college that the room numbers were placed about five feet off the floor and contained braille. To me, this seemed too high. Other signs were placed according to where they looked the best and not for functionality. How can the signs be properly used if they're randomly placed?

Is this a large issue? In the age of computers, is braille relied on as heavy as it was in the past?

Thank you! No one has been able to answer my question and it's irritating the hell out of me.