Extreme Reality, a company that has been developing motion capture technology that Sega and others have used in PC & mobile games, today announced it is opening up its SDK to all developers. The software works with any 2D camera and allows devs to easily capture and analyze motion for games and apps. Think Microsoft’s Kinect, but with Extreme Reality motion is captured with an iOS device’s built-in FaceTime camera rather than bulky, expensive external hardware:

Offered as a SDK, Extreme Reality’s Extreme Motion is the only technology to provide full-body, software-based, motion analysis and control to any computing device or operating system via a standard camera.  It enables developers to easily add motion experiences to existing games or applications, and to create a wide range of new experiences (applications, games, security solutions and more) that pioneer Natural User Interfaces (NUI) while breaking the physical barriers of current hardware-based technologies.  The SDK supports Unity, C++ and C# programming languages for multiple operating systems, including iOS, Windows7 and WinRT.

Earlier this month one of the first big publishers to take advantage of the Extreme Reality technology was Sega with its latest GO DANCE title for iOS devices. The game allows users to set their device down and dance in front of the camera while it captures motion and ranks users on the accuracy of their dance movies.

While the SDK is free for developers to download, Extreme Reality will require them to enter a revenue share agreement that will see devs hand over 10%-20% of net revenue after fees.

The company has also recently opened its iPad Challenge contest to encourage more developers to develop iPad games using its motion technology.