Authentication using mobile devices

摘要

Technologies are generally described for authentication systems. In an example, an authentication system can be built among devices by sharing an image that is virtually torn into pieces. Each participant in the authentication system receives a piece of the image. The participants are authenticated when the pieces are later joined to form the original image.

主权项

1. A method to authenticate users, the method comprising:
acquiring an image in a first device associated with a first user; sharing at least a portion of the image with a second device associated with a second user; determining a first position of the first device with a global positioning device of the first device; determining a first acceleration of the first device as the image is virtually torn; generating a first load value using at least the first position or the first acceleration; determining a second position of the second device with a global positioning device of the second device; determining a second acceleration of the second device as the image is virtually torn; generating a second load value using at least the second position or the second acceleration, wherein:
the first and second load values are used to virtually tear the at least the portion of the image to generate a first piece and a second piece by movement of one or both of the first device and the second device; andthe first piece of the image is stored in the first device and the second piece of the image is stored in the second device; and authenticating the first device and the second device in response to the first piece and the second piece of the image being joined to form the image.