«Pecunia non olet.»
(money does not stink)
Vespasian
Japan was interesting when it came to cultural differences. For example, in the US (Hawaii), people at Starbucks seemed to be pissed when you do not give a tip. In contrast, it would be impolite to give a tip in Japan. It also seems impolite to hand money over directly. Instead — in many but not all cases — you put it on a tray.
There is even less contact in some places. For example, in a Seven Eleven, you put the goods on the counter and the «cashier» scans them and puts them into a bag (if you take one). He does not, however, take your money. You feed it into a machine — bills and coins.
In some places, you even order via your smartphone (or a provided tablet or machines at the entrance).
For example in a café …
or in a restaurant:
Besides saving effort (when ordering), the underlying issue seems to be to focus on the service and «downplay» the issue of money.
An interesting approach and perhaps something to think about …