I think we used the solutions as a vehicle for discussion, rather than settling on a "correct" one. Though I can't recall for certain, it was well over a decade

I think we used the solutions as a vehicle for discussion, rather than settling on a "correct" one. Though I can't recall for certain, it was well over a decade ago. Yours is a good supplement, whichever method is otherwise used. I'm partial to cheap, analog solutions. Though, installing quality signage on a large campus can quickly become more expensive than a simple app.