A quote from their blog site: From Yahoo!'s point of view, any signed-in individual involving with Yahoo! solutions is a valued user, whether she authenticates utilizing a Yahoo!, Facebook, or Google ID.
Yahoo Sign In with Facebook
Login to Yahoo Mail account on PC/Desktop computer
First you require a username as well as password; now open internet browser from your computer/desktop. Then open web page www.yahoomail.com on it. To initiate their brand-new "one-click" sign-in simply click the "Sign in with: Facebook" symbol on the Yahoo! login display. That's all you need; to get access of your Yahoo mail account.
Login to Yahoo Mail account on Mac computer
If you are a user of Mac computer system after that Safari must be your internet browser. Safari is the best surfing solution for Mac OS; Safari fasts, faster and also easy to use internet browser. You could easily access your Yahoo Mail account with it. See, how you can login with Yahoo mail account on Safari browser. Simply open Safari and also type www.yahoomail.com; you will be routed to Yahoo mail sign-in web page. To start their brand-new "one-click" sign-in just click on the "Sign in with: Facebook". You are after that completely signed into Yahoo!
Nevertheless, a recommendation- you still won't have the ability to sign into a mobile or desktop computer customer using Google OpenID.
I hope this post can aid you. Thank you ...