Automated dispensing systems like Milk ATMs currently rely on someone to verify payment and then dispense the product. But what if you could initiate and verify payment right on the machine itself.

That is what we have been working on: @QuePayApp A user can then self-serve while you as the merchant get notified that a sale has been done and for what amount. The amount of product remaining can also be known and you notified to prepare to top up.

Why do we have to key in tokens after buying them?

Since this works, then it simply means that the hardware communicates with the server to verify the keyed-in token code to verify its validity. So why not just query the server automatically? 🧵1/9 With this in mind I concluded that it had to be a firmware issue and as such an update on the firmware should solve this.

I was consulting for a company who are buying the smart meters for gas and water from China and they were using similar APIs as KPLC use.