2. State-of-the-Art and Potential MFA Sources

2.1.3. Voice Biometrics

Most of the contemporary smart electronic devices are equipped with a microphone that allows utilizing voice recognition as a factor for MFA. At the same time, the technology advancement of tomorrow may allow special agencies not only to recognize the speakers but also to mimic their voices including the intonation, timbre, etc., which is a serious drawback of utilizing voice as a primary authentication method.