I had a summer job in a place with one of these. When I started, I was like “how does this guy know the 15 digit number for these screws?” By the end, I know the code for screws in general, the code for popular types, metric/imperial, and then it was like length and size. The numbers flashed up as well, so you wouldn’t have to memorize anything, but you quickly didn’t need to see the numbers for popular items.

This is the way. The "bicycle for your mind" that Jobs wanted. It augments your memory and enhances everything you do, and at every step you quickly internalize a system that doesn't change according to the whims of far-distant web devs.