Fundamental Limits-Achieving Polar Code Designs for Biometric Identification and Authentication

Multimedia content authentication: fundamental limits

In many multimedia applications, there is a need to authenticate a source that has been subjected to benign degradations in addition to potential tampering attacks. We develop a meaningful formulation of this problem, and identify and interpret the associated information-theoretic performance limits. The associated systems are shown to perform dramatically better than frequently proposed approa...

Estimating the Fundamental Limits is Easier than Achieving the Fundamental Limits

We show through case studies that it is easier to estimate the fundamental limits of data processing than to construct explicit algorithms to achieve those limits. Focusing on binary classification, data compression, and prediction under logarithmic loss, we show that in the finite space setting, when it is possible to construct an estimator of the limits with vanishing error with n samples, it...

Biometric Authentication

As people become more connected electronically, the ability to achieve a highly accurate automatic personal identification system is more critical. Biometric technology is a way to achieve fast, user-friendly authentication with a high level of accuracy. This presentation will highlight some of the benefits and the few limits of using biometrics for authentication. Emerging applications, both w...

Biometric Authentication

Keystroke Biometric Identification and Authentication on Long-Text Input

A novel keystroke biometric system for long-text input was developed and evaluated for user identification and authentication applications. The system consists of a Java applet to collect raw keystroke data over the internet, a feature extractor, and pattern classifiers to make identification or authentication decisions. Experiments on over 100 subjects investigated two input modes – copy and f...