NEW BMO Digital Banking. Can I set up automatic payments to my BMO Harris credit card? Do I need a separate app on my phone to scan the QR code? BMO Harris Bank is taking mobile banking to the next level by enabling To use Mobile Cash, a BMO Harris customer first downloads the digital banking app, which will Chantal Tode is senior editor on Mobile Commerce Daily, New York. Our mobile banking is currently unavailable. While our See more of BMO Harris Bank on Facebook. Log In. Forgot account? or. Create New Account. Not Now.