Thanks for the reference; very interesting stuff.
The type of directly practical implants that allow you to open doors, etc. interest me mainly as a gateway to more involved implants that I don’t think exist yet. My focus is on trying to optimize body-mind function as an integrated unit. So I’m not hankering to get any implant just yet; more keen on understanding the ins and outs of where all this is going.
That said, I do fantasize about millions or billions of nanoparticle implants somehow connected to an aspect of cognition that would allow me to enhance my bioelectrical circuitry in all kinds of targeted ways at will, making my bodymind function far more advanced than it currently is. So I could cure disease at will, or run forever, or be instantly at peace. But yeah, that’s a long way off.