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This is not exciting - The technology has been around for years and I've used for as a joke to play pranks on friends. The scary bit is that you can get the voice data from people that upload videos to YouTube. I've used Siri and voice recognition for the last 10 years to dictate everything, from my PhD dissertation to this very text. The accuracy is probably 100% and faster than I can type but effortless. It's pretty secure, no one can access my voice data. However I do have a few old videos on YouTube/Facebook which scares the shit out of me. After reading this article I've made them private.