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System Architecture

We propose Déjà Vu as a system for user authentication. Déjà Vu is based on the observation that people have an excellent memory for images [Hab70, SCH70, Int80, PC69].

Using Déjà Vu, the user creates an image portfolio, by selecting a subset of p images out of a set of sample images. To authenticate the user, the system presents a challenge set, consisting of n images. This challenge contains m images out of the portfolio. We call the remaining n-m images decoy images. To authenticate, the user must correctly identify the images which are part of her portfolio.

Déjà Vu has three phases: portfolio creation, training, and authentication.


next up previous
Next: Portfolio Creation Phase Up: Déjà Vu Previous: Déjà Vu

Adrian Perrig
Thu Jun 15 15:16:10 PDT 2000