I began implementing a PAM module for MIDI, but that was years ago and the repo got garbage collected. The idea was that your password (or second factor) would

I began implementing a PAM module for MIDI, but that was years ago and the repo got garbage collected. The idea was that your password (or second factor) would be a tune, played in just the right way, with the right emphasis and velocity and even mistakes. Bonus points, train an ML to detect nuances that define an individual's performance, as accurate as any retinal scan