Comment: My point is that they are

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In reply to comment: Reasonably reliable voice (see in situ)

My point is that they are

My point is that they are recording and holding all information now, and 20 years from now they will have the ability to review and pick out an individual voice, probably much sooner. They realize this and are building the database. It would be like someone in the 80's collecting hair samples in the hopes of DNA testing in the future.