Traditional two-factor technologies, requiring you to type in a code from your phone, are a hassle and have numerous security shortcomings. A recently published standard from the FIDO Alliance, Universal 2nd Factor (U2F) is the next step in the evolution of account security. Through tightly integrating hardware tokens like the YubiKey, the web browser, and websites like GitHub, U2F provides an easier and more secure way to lock down your web accounts. Jerrod Chong and Ben Toews, from Yubico and GitHub respectively, discuss how U2F works, how it improves the security and user experience of two-factor authentication, and why and how GitHub chose to adopt this new standard. About GitHub Universe: Great software is more than code. GitHub Universe serves as a showcase for how people work together to solve the hard problems of developing software. For more information on GitHub Universe, check the website: http://githubuniverse.com