Visa and Mastercard tested PIN entry directly onto the screen of Square POS smartphones and tablets last year in Australia, replacing a separate PCI PTS-compliant PIN entry device connected via Bluetooth, which is required for PCI-approved mobile payments worldwide. PIN on Mobile requires a Mobile PIN Entry Application on devices that operate with a SRED (Secure Reading and Exchange of Data) module card reader that immediately encrypts data. The Australia test, which involved 5,000 merchants, has been completed, although Square continues to accept PINs that are directly inputted on its devi...