How to make portable Passkeys

The first time I heard about Passkeys I was about to email one of my dashingly swoon worthy friends. In this case it was Sean Crisden. I was about to detail the intricate specific joy of crunching down on a slice of freshly baked Apple Pie when my phone dinged. "Hey," my friend said, "since you're a tech person, explain Passkeys to me." And so, here I am. Think about passwords. I mean, really…