<p>Demographics by age group ().</p>

However, each involves tradeoffs in cost, accuracy, latency and susceptibility to spoofing. We present and report laboratory testing of Oral Cavity Acoustic Verification (OCAV), a biometric verification system that transmits sound waves into the user’s oral cavity, characterizes the acoustic response, and returns a verification decision by comparing the acoustic response to the individual’s prerecorded acoustic signature.

A total of 108 healthy volunteers aged 18–60 years were recruited, and a unique acoustic profile was created for each participant. Across three recording sessions conducted one week apart, 20,860 genuine trials and 18,880 impostor trials were collected to evaluate verification accuracy. Verification accuracy was 90.1% for a single trial and 95.2% when pooling 5 consecutive trials.