Except the Suica card featuring a notch (for helping as tactile aid to less-abled), I can assure you none of these are in widespread use (i.e. absolutely commonplace). For a fact, I am seeing some of these for the first time with a sense of "Wow, this is in Japan?"
The ones which are sometimes encountered are the Braille on top of cans (Beers mostly. Not colas. The article missed elevator buttons & directions - they always have braille), and the toilet pink-noise. Calculator and coffee holders depends on the banks. JP & 7-11 ATM don't seem to have it. Wrapping paper in chewing gum boxes only - not the sticks. There are equally numerous or more such novelties seen in China, so I believe its not something extraordinary.
I wish HN (and Reddit) stopped romanticizing Japan. This is a well functioning society, people are courteous & law is followed to the letter - but we are in no way living in utopia. These are some niche inventions & gadgetry. Rather, the concern is Japan is falling behind in regular technological advances since the past decade (at least)
Edit: some details, fixed typo