Tobii announced at the 2019 Game Developers Conference, a new software development kit (SDK) for XR applications and new resources for PC developers. The new developer guides and tools ease eye tracking integration in a variety of important ways, from providing new libraries and APIs for intuitive object mapping and selection, to delivering example code and implementation tutorials. The Tobii XR SDK and associated libraries are designed to be used with and complement the capabilities of device-specific SDKs associated with VR headsets that support eye tracking and the OpenXR initiative.