[technion]

Side question, where are you using U2F?

I love the principle, but I can't use it with AWS, I can't use it with my bank, I can't use it with my domain registrar, and I can't use it with Office 365.

That's 0/4 of the high priority targets for me.

[secure]

http://www.dongleauth.info/ lists U2F support status for many websites.

[technion]

That's actually pretty depressing.

Under "Cloud Computing", ONLY GCP has support.

Under "security" vendors, no one does. "Payment" vendors again only list Google, and none of the domain registrars do.

In fact the most positive field is "social networks", with three separate ticks.