@anne_twain @cargot_robbie @dch depending on the regulatory requirements of the location, certain jurisdictions will have designed a standard by which blind people can expect certain infrastructure elements to occur. no need to "feel around the entire wall", sometimes ๐
it's mostly about consistency of design, so that the person expects the braille signature sign to exist just above the door latch to the non-opening side, and that this type of bathroom can be identified by a notch or protrusion on the lowest point of the wall where the cane tracks against (when you see blind people casting the cane left and right in front like radar, part of the action involves identifying regularities for inspection).
non-blind people do the same thing, except with our eyes, also constantly scanning the environment, looking for regularities and expectations that we've come to know by way of repetition. to make things better for disabled people it's a process of creating expected, regular, consistent experiences with the environment.
I have ADA bullshit in my life, and a number of opinions on those aspects, FWIW... it fuckin sucks not being able to walk in prior years, and it currently sucks not being able to do all manner of "regular" things, and it sucks having to deal with any and all disability. However, it's very welcome to see where efforts are being made to understand these differences, and to know that there are caring and compassionate people who don't try to politicize differences in ability. ๐