Oklahoma City-based MidFirst Bank has joined the cardless cash movement with the implementation of a new service that allows customers to withdraw funds from any MidFirst ATM using the bank's mobile app, according to a press release

Within the app, the customer selects an account and withdrawal amount. Then, at a MidFirst ATM, the customer scans an on-screen QR code using the smartphone camera and the cash is dispensed.

Cardless cash is now automatically included in the most recent version of the bank's iPhone and Android Mobile apps, and is available to customers with an eligible MidFirst checking account and an active debit or ATM card, the release said.

MidFirst Bank holds $13.3 billion in assets, and operates more than 70 banking centers and 175 ATMs in Oklahoma, Arizona and Colorado.