Apple brings Facebook integration to mobile and desktop OS

Apple today announced Facebook integration for iOS 6 and OSX Mountain Lion that allows users to sign in once and easily post back to the social network.

Similar to Apple’s Twitter integration, iOS 6 offers the “tap to post” option directly from iOS 6, and sharing from Photos, Safari, Maps and other applications. Apple has also added Facebook contact info to its address book and Facebook events to its calendar app. Across mobile and desktop, the App Store now includes Like buttons so users can see which apps, music, movies and shows their friends Like. Game Center will import friends from Facebook, though it’s unclear whether Game Center Challenges will work for cross-platform Facebook-mobile games.

Safari on OSX Mountain Lion will also support Facebook sharing, though the company did not explain much about this on stage at the WWDC. It is likely to be similar to Twitter sharing, which was announced in February. [Updated 6/11/12 1:36 p.m. – Facebook sharing will be supported in Safari, Notes, PhotoBooth and iPhoto, according to Apple’s website. OS X also adds users’ Facebook friends and profile photos to Contacts. Facebook notifications show up in Notification Center, and users can update their status from there.]

An Apple-Facebook partnership has been speculated about for years, but past attempts at integration apparently fell through for Apple’s Ping service and iOS 5. Late Apple CEO Steve Jobs called Facebook’s terms “onerous” in the past. Now, either through leadership changes or growing necessity, the companies are apparently able to work together. The integration could help Apple and Facebook as they compete with Google, which offers its own mobile operating system and social network.

Developers could also benefit from the partnership. Facebook single sign-on could reduce the friction associated with connecting third-party mobile apps with a user’s Facebook account, and Like buttons in the App Store could improve app discovery.

Last year Apple brought Twitter integration to iOS 5, which allowed single sign-on for Twitter use on the phone and with any third-party app. Today Apple shared that Twitter has seen a 3x growth increase in iOS users since then.

We will update with more information as it becomes available.

Images from Apple.