It is in need of disruption, but there are alot of laws surrounding taking cash from people for something other than a product/service. The problem you'll run

It is in need of disruption, but there are alot of laws surrounding taking cash from people for something other than a product/service. The problem you'll run into with the black box scenario is that the customer has no access to the funds unless you bring them the box which makes it a poor place to keep working capital funds that businesses use. Even if you start giving loans based on the box you start hitting legal restrictions, and compliance issues. I worked for years in the financial industry focusing on services for the under/unbanked which relies on a lot of cash handling. Every way you can think about how to get around the law has been used in the past to launder money and/or evade taxes.