Fido

https://fidoalliance.org

About The FIDO Alliance

The Mission of the FIDO Alliance is to change the nature of online authentication by:

• Developing technical specifications that define an open, scalable, interoperable set of mechanisms that reduce the reliance on passwords to authenticate users.
• Operating industry programs to help ensure successful worldwide adoption of the Specifications.
• Submitting mature technical Specification(s) to recognized standards development organization(s) for formal standardization.

You may want to start with the specifications overview:

The FIDO (Fast IDentity Online) Alliance is a 501(c)6 non-profit organization nominally formed in July 2012 to address the lack of interoperability among strong authentication devices as well as the problems users face with creating and remembering multiple usernames and passwords. The FIDO Alliance plans to change the nature of authentication by developing specifications that define an open, scalable, interoperable set of mechanisms that supplant reliance on passwords to securely authenticate users of online services. This new standard for security devices and browser plugins will allow any website or cloud application to interface with a broad variety of existing and future FIDO-enabled devices that the user has for online security.