Emphasis on "to some extent". Relying on it is a bad idea even though it'll keep out most randos. Speech fingerprinting, much like actual fingerprints, is not

Emphasis on "to some extent". Relying on it is a bad idea even though it'll keep out most randos. Speech fingerprinting, much like actual fingerprints, is not a reliable way to establish identity, especially if you want to avoid false negatives as you probably would in mass consumer facing technology.