US Patent 9852416 System and method for authorizing a payment transaction

A method for authorizing a mobile payment transaction is provided. The method includes receiving, by a server, a request to authorize a payment transaction which originates from a point of sale (POS) module. In an embodiment, the request includes payment information of the payment transaction and location information of the POS module. When the request is received, an authorizing client device for the payment transaction is identified based on the payment information and a disposition of the request to authorize the payment transaction is determined based on whether the authorizing client device is located within a predetermined proximity to the POS module.