Some stuff about about software development and related (devops, cs, ai, etc.). Stolen memes (mostly), some rare #random_PoK (random Piece of Knowledge), stream notifications. Also #weekendmeme
I have lots of experience with this actually. The way it works is that the app asks the user if they'd like to use a passkey instead of their password and the user says "No" and uses their password to log in. Pretty simple really.