Visual image authentication

Abstract

Methods and systems described herein perform a secure transaction. A display presents images that are difficult for malware to recognize but a person can recognize. In at least one embodiment, a person communicates transaction information using visual images received from the service provider system. In at least one embodiment, a universal identifier is represented by images recognizable by a person, but difficult for malware to recognize. In some embodiments, methods and systems are provided for determining whether to grant access, by generating and displaying visual images on a screen that the user can recognize. In an embodiment, a person presses ones finger(s) on the screen to select images as a method for authenticating and protecting communication from malware. In at least one embodiment, quantum randomness helps unpredictably vary the image location, generate noise in the image, or change the shape or texture of the image. In some embodiments, visual image authentication helps Alice and Bob detect if Eve has launched a man-in-the-middle attack on their key exchange.