Starting today, you can offer users the option to sign in to your website or mobile app with their Google credentials, and bring along their Google+ info for an upgraded experience.

In addition to secure authentication, Google+ Sign-In includes features to accelerate app downloads and deepen engagement (like over-the-air Android installs from your website, and interactive posts).

Read the official announcement on the Google+ Developers Blog, or get started right away with our developer docs.

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