Are you saying we need Neuralink? :)
Discussion
I'm pondering a retina scanner that combines a hash with a secret salt and does TOTP. Something that won't work if you're asleep ideally
Well, I know how to build a retina scanner if you ever need one :)
But an iris scanner is probably easier. Just keep in mind that both Iris and Retina do slightly change over a long lifespan.
If everything you have is tied to having access to your eyes you might lose everything on a simple cataract surgery.
Passkeys to the Rescue