System and Method for Dynamic Temporary Payment Authorization in a Portable Communication Device

A system for issuing a dynamic temporary credential to a portable communication device for use in a transaction with an electronic control point. The system receives the current geo-location of the portable communication device and transmits a dynamic temporary credential to the portable communication device from the centralized computer. The system further scores the risk in authorizing a transaction associated with an electronic control point using the dynamic temporary credential it issued. The system may prevent the transmission of the dynamic temporary credential until the end user has been authenticated, which may include verifying one or more of a manually input passcode, the unique digital signature of the portable communication device, and know your customer queries. The system may further include a validation mapping gateway operably connected to one or more issuers that substitutes legacy payment data for the dynamic temporary credential in a payment transaction before sending the payment transaction along with the risk score to the issuer associated with the legacy payment data.