What is Use your Illusion

Use your Illusion is a novel mechanism for user authentication that is secure and usable regardless of the size of the device on which it is used. The system relies on the human ability to recognize a degraded version of a previously seen image.

Online Demo

You can try Use Your Illusion on your browser. Please enable JavaScript and to accept cookies when trying Use Your Illusion. Note: We do not collect any personal information on this website; cookies are only used to track your progress in the authentication process.
Try it now!

Concept

To better understand the cognitive process behing Use Your Illusion, try the following experiment.

1. The above image is a distortion of a photo. Try to guess what the original photo represents.
2. Click the image, the original photo pops up. Compare your guess to the original photo.
3. Look again at the distorted image. Do you see what it looks like now?

To someone who has seen both pictures, it is clear that the distorted image represents the object in its original image, and that seeing the distorted image evokes the original object. However, without having been exposed to the original photo, the distorted image does not carry much meaning.

More details?

Our forthcoming paper gives more details about Use Your Illusion, its use cases, and experimental studies of its usability and security. If you are browsing this website, chances are good you have a pre-print of the paper. Kindly do not redistribute it for the moment!