Pin Code As You Go
Example "Pay As You Go" model:
A potential renter, buyer of your product stands in front of your box and proceeds as follows:
Scan qr code > pay > get one time pin code to open the door/box.
This kind of access control is made for business concepts (see product categories) like:
RentMe .global, BuyMe .global, MySafe .global, MyShop .global, MyStorage .global, OfflineStore .global