Transaction charges and a lack of customer demand mean few shops in his area accept cashless payments, he says.
Part of the reason it’s so stubbornly prevalent, he thinks, is Japan’s tradition of lifetime employment.
For more than 65 years he has been making hanko – small ink stamps used to authenticate documents the same way signatures are used in the West.
Every Japanese person has at least one hanko and it is mandatory to make a company hanko when opening a new business.
But increasing digitisation and efforts to reduce paperwork mean they aren’t required for nearly as many business processes as before, Sato says.