US Patent 10572868 Computing system implementing a network transaction service

A computing system implements a network transaction service in which prepaid cards physically residing at merchant locations. Users of the network transaction service can launch a service application to indicate a transaction at the merchant location. A transaction data set is then received from a point-of-sale terminal at the merchant location—corresponding to use of the prepaid card—which enables the computing system to fund the transaction from a shared funding source of the network transaction service. Subsequently, the computing system can access a customer account of the user to reimburse the shard funding account for an amount of the transaction.