What is this?

This is plastic tray I designed on Autodesk Fusion 360, which was made to handle in person transactions. Instead of directly handing money to the cashier, just put the money on the tray, and then they'll take the money on the tray instead of taking it from your hands. While I was watching this video on all sorts of Asian food, there was this one part where the guy who was vlogging had to give money to the cashier. But instead of directly handing money to the employee, he put the money in a convenient tray, which is also used for returning change. Then it struck me. It would help so much if we could implement something like that in the US and in other places. It’s scientifically proven that people spread more germs from hand-to-hand contact than from something like kissing. So I opened up my CAD software and started designing a tray for the purpose of physical cash transactions. It could be used for credit cards as well. But other than sanitary purposes, I think a system like this should be enacted in places like the US so you can count your money