BACKUP YOUR BRAIN: The Neuroscientist Who Wants To Upload Humanity To A Computer: Randal Koene is recruiting top neuroscientists to help him make humans live forever.
Of course, if your mind is uploaded, whoever controls the hardware and software controls your mind. That seemed less sinister in the 1990s than it does today.
The best science fiction treatment of this that I’ve read is Greg Egan’s Permutation City. Back in the Mobius Dick days I had a song on this — I recommend the Club Dance Edit.