Fundamental Tradeoff among Identification, Secrecy and Compression Rates in Biometric Identification System

Abstract

We investigate the fundamental tradeoff among the identification, secrecy, and compression rates under the condition that the prior distribution of an identified individual is unknown. We combine the techniques developed by Tuncel (2009) and Ignatenko and Willems (2010) to analyze the capacity region of the three rate tuples mentioned above. We show that when the secrecy rate is zero, the capacity region of the identification and compression rates is characterized as a form similar to the one given by Tuncel.