This is absolutely absurd and really scary. I'm not a hugely scientific person, so I might have misunderstood, but it seems like we are getting close to being able to figure out the whole of a person just from a snapshot of one part of them, like their voice.
I really worry for people born 100 years from now. We need to be really careful with technology like this. This could lead to a dystopia greater than Orwell could have ever predicted, and I don't want to sit idly by while it happens