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We present, in this chapter, an overview of techniques for the performance evaluation of behavioral biometric systems. The BioAPI standard that defines the architecture of a biometric system is presented in the first part of the chapter. The general methodology for the evaluation of biometric systems is given including statistical metrics, definition of benchmark databases, and subjective evaluation. These considerations rely with the ISO/IEC19795-1 standard describing the biometric performance testing and reporting. The specificity of behavioral biometric systems is detailed in the second part of the chapter in order to define some additional constraints for their evaluation. This chapter is dedicated to researchers and engineers who need to quantify the performance of such biometric systems.