not really an API, but related: touchless/cardless ATM: an App on my phone which I can use to find the nearest ATM and make a withdrawal. It knows my account

not really an API, but related: touchless/cardless ATM: an App on my phone which I can use to find the nearest ATM and make a withdrawal. It knows my account credentials. I tell it how much cash I need. The app generates the transaction, encodes it in the QR code. I show the phone screen to the ATM's camera. The ATM dispenses the cash, takes photo of the person receiving the money and attaches it to the transactions log/statement. No germs exchanged, no risk of skimming, more security (password vs. 4-digit pin code), no need to carry the ATM card around.