Late last month, Google gave developers the ability to add Google+ sign-ins to their sites, and the company expanded that feature on Tuesday, giving developers more options to go along with it.

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

Developers who are interested in checking out the new features can get started by reading Janrain’s or Gigya’s getting started guides.

Source: Mashable