Add Google+ Sign-In Improve registration and sign-in conversion with a fast and secure authentication option for users. To get started: Initialize the Google+ clientEnable Google+ Sign-InPull profile and social graph info Show profile information, and relevant content and connections from circles. Retrieve a list of people in the user's circlesRetrieve a user's profileRetrieve a user's email addressAdd Google+ sharing Let visitors recommend and share your content, and prompt friends to take specific actions on your site. SharingShare interactive postsAttaching pictures and videosPrefill the share dialogDeep linking into your mobile appBasic sharing without signing inDetecting if posts are shared Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Last updated May 28, 2015.