Passkeys were hot last year, don’t seem to be catching on, here’s one view of why that is. Dark and sobering but convincing: https://fy.blackhats.net.au/blog/2024-04-26-passkeys-a-shattered-dream/
Passkeys: A Shattered Dream

Firstyear's blog

@timbray I've had Google's Passkey work exactly twice on my Pixel 6 Pro. It took a chance finding of needing Android Chrome to be allowed to post notifications to get it to work after months of intermittent trying, and it finally did! Only to fail and never again work since then, several months ago.

@jxyzn @timbray Similar experience. Sony's PSN recently pushed passkey login, thought I'd bite the bullet after hearing about it, set it up, my Pro 6 instantly lost it (or never saved it) and it took me another two hours to get back into my PSN account (which by then had also disabled 2FA so I had to reset that as well).

Never again.