[withinboredom]

Chrome supports a webauthn solution built-in if you don't have windows/platform authentication support. I think Firefox does too, and probably even Safari on really old machines. If you are targeting semi-modern browsers and devices made in the last 5-10 years, you should be fine.

[mffap]

Yes. To my knowledge WebAuthN works great on Chrome, Safari, Firefox (most times) on MacOS/iOS and Windows devices. Linux is still an issue unfortunately as it seems.

[aaaaaaaaata]

Opposite of what I'd expect.