Eric Sachs, Product Manager, Google Security Originally posted 9/18/2008 (last update 10/27/08) Federated Login has been a "holy grail" in the identity community for a long time. We have known how to do the technical part for a long time. However the industry has constantly tried, and failed, to find a model that was (1) simple for end users, and (2) had a reasonable trust model between the RP (
![Usability Research on Federated Login - Internet Identity Research](https://cdn-ak-scissors.b.st-hatena.com/image/square/e86e90cd5eedd49016cbb19e761fb874f7c32759/height=288;version=1;width=512/https%3A%2F%2Fsites.google.com%2Fsite%2Foauthgoog%2F_%2Frsrc%2F1468887106233%2FUXFedLogin%2Flsoui1.png)