Register and login with Google + and Facebook
I want to add a possibility to sign up and log in per Google+ or Facebook account. Can anybody give me detailed information how this can be done at a Drupal 7 website?
Use any of the modules mentioned bellow
Social Login and Social Share is a module which lets you add the functionality of social sharing with no cost but it comes with paid plans for social login. You will have the functionality of Social Login, Social Sharing, User Profile Data & Permissions, Social Analytics, Social Data Integration, Single Sign-On.
Social Login is a Drupal module comes with no cost at all and which lets your users register and login to your site using their existing social media accounts. It supports more than 35+ social sites.
Hope these will solve your problem.