US Patent 10037521 Background communication failover for mobile payments

A mobile point-of-sale terminal includes a payment card reader having a card interface configured to read data from a payment card and transmit the payment card data, along with other transaction information, via a non-internet communication channel to a payment processing system to process the point-of-sale transaction. The mobile point-of-sale terminal may be configured to run a register application configured to receive transaction information, including payment card information from the payment card reader, determine whether an internet connection is available, and, if an internet connection is not available, transmit the transaction information to the payment processing system using a non-internet communication channel.