US Patent 10496977 Storing and forwarding payment transactions

Method, systems, and apparatus for a method of processing a payment transaction using a mobile device of a merchant. In one aspect, determining the mobile device does not have a connection to an external network; receiving data indicating a payment transaction between a customer and the merchant; determining whether the payment transaction should be stored, where the determining is based on a risk heuristic model that considers one or more of the following: a number of already stored transactions, a value of the payment transaction, a total value, where the total value is a sum of the value of the payment transaction and values of one or more already stored transactions, and risk factors associated with the customer; and based at least on the determination, storing the payment transaction on the mobile device for future processing.