http://www.dongleauth.info/ http://www.dongleauth.info/ maintains a list of sites supporting U2F devices. There aren't many yet, but it looks like a Wordpress p

http://www.dongleauth.info/ http://www.dongleauth.info/ maintains a list of sites supporting U2F devices. There aren't many yet, but it looks like a Wordpress plugin exists that may end up in core. There are also a handful of additional sites listed in issues and pull requests on the site's GitHub page (https://github.com/Nitrokey/dongleauth https://github.com/Nitrokey/dongleauth). (I'm not affiliated with the site, I just check it periodically and thought it might be of use here.)