Learn in the textbookBiometric Authentication and Authentication Accuracy Metrics
DefinitionVoiceprint authentication (声紋認証) collects and analyzes features of the voice such as pitch and resonance (the voiceprint) through a microphone to confirm identity.
ExplanationSince a microphone can serve as the reader, it also suits identity checks over the phone. On the other hand, it is easily affected by voice changes from a cold or by background noise, and it needs protection against impersonation using recorded voices.
AnalogyIt is like knowing a family member from their voice alone on the phone, except that a machine turns the voice features into numbers and compares them.
Memory hookThe name compares the voice to a fingerprint: when a voice is drawn as a chart, a pattern unique to each person appears.