At what level is voice recognition technology at currently and how long has it been so accurate?

So I've noticed this past year that voice technology seems to have reached some type of milestone as when I phone my bank they are using a short recording of my voice to authenticate and identify myself.

Is this technology 100% and how long has it been this accurate?

Does the technology exist to sample random voices and to identify it after running it through a database to obtain a match in the same way you could run someone's fingerprints …

privacy recognition technology voice voice recognition