REPORT BenZeghiba-02b/IDIAP User-Customized Password HMM Based Speaker Verification BenZeghiba, Mohamed Faouzi Bourlard, Hervé EXTERNAL http://publications.idiap.ch/attachments/reports/2002/rr02-35.pdf PUBLIC Idiap-RR-35-2002 2002 IDIAP published in The Advent of Biometrics on the Internet (COST 275,',','), Rome 2002 is presented. The system has no {\it a priori} knowledge of passwords. A hybrid HMM/ANN system is used to infer the phonetic transcription of the password. The emission probabilities are then modeled by a multi-Gaussians HMM model. Evaluation experiments, conducted on PolyVar database, showed results comparable with a system where the correct phonetic transcription of the password is known {\it a priori}.