Google+ sign-ins are similar to their Facebook and Twitter counterparts, allowing users to sign in to a website that isn’t Google-owned using their Google credentials, bringing along information from their Google+ profile such as their name and friends.
Google has now announced support for social infrastructure platforms Janrain and Gigya, which many developers are already using in their sign-in systems. The new support brings with it a number of new features for Janrain and Gigya customers, including the ability to:
- Add trusted authentication to apps and sites
- Allow web users to automatically download their Android app
- Customize their app experience using Google+ profile info
- Enable users to share interactive posts with friends
- Write app activities that only appear when they’re relevant