Are there any braille standards for shops?
For instance, if a blind person enters a supermarket, how do they find a guide that walks them to where the gloves are, how must the gloves be positioned to be found and ripped together, how can the blind person know at what height the food labels, presumably with braille labels on them, can be found? Also, the shelf ridges would have to be smooth or the blind person would get hurt on the sharp edges.
And finally, is there a standard, or are there any standards, maybe interoperable or as extensions, describing in what order prices, currencies, weights, price unit, or whatever, should be configured?