Abstract: A system and method for using device characteristics to authenticate a transaction is disclosed. A first device can be used to request a transaction, and a second device can be used to approve the transaction. A push notification or authentication code is transmitted to a second device, and approval of the transaction is completed based in part on the hardware characteristics of the second device. A security database stores the hardware characteristics of the second device and links the characteristics to authentication profiles such that the second device can be used as a physical authentication device in multi-factor authentication.

Abstract: A system and method for push notification authentication includes a communication interface that communicates with a mobile device via a network, a digital security delivery database that stores information about a user that is enrolled in push notification authentication, the information about a user that is enrolled in push notification authentication hardware includes characteristics of the mobile device and login information for the user, and an application programming interface (API) framework coupled to the communication interface that receives information indicating that a transaction requiring push notification authentication has been approved by a user of the mobile device, updates the digital security delivery database to indicate that the transaction requiring push notification authentication has been approved by the user, and transmits a transaction status to the mobile device.