Relay does a good job of automatically partitioning money, though you still need to manually execute external payments. Gives you a little extra interest on money allocated for taxes too
I worked at a company that did interactive retail signage and wrote the platform to remotely deploy software to the screens. Can confirm it was a giant pain in the ass. A couple random thoughts:
1) Internet access was extremely unreliable on site, as was our ability to get useful assistance from retail staff. Queueing inbound and outbound signals was key, as was locally storing any content.
2) Our primary customer was non-technical marketing/creative folks. They bought us because it allowed them to deploy novel signage formats without knowing how to code. (In case that’s a useful pain point to pursue.)
https://relayfi.com/