Tobii EyeX .NET SDK offers developers eye tracking features. Working in tandem with the Tobii hardware, the SDK allows developers to create natural human-computer interactions using a combination of eye-gaze and other user inputs. The EyeX SDK provides access to the EyeX Engine API so that an application can be gaze-enabled.
Voice is considered the next great user interface, but the challenge is finding a way to cost effectively enable its use. At the APIcon 2014 conference this week, Alex Lebrun, co-founder and CEO of Wit.AI, showed how developers can make use of an API to add voice-recognition capabilities to their applications.