Hi Soravis,
The answer is “Yes, but…” :
Yes: The Tobii PCEye Explore eye tracker device in itself is fully compatible with the Tobii EyeX Engine, the EyeX SDK and the Tobii Gaze SDK.
But: The Tobii PCEye Explore comes with its own interaction software, and if this software is installed and running it will block some of the EyeX Engine API features in favour of its own interaction implementations. This makes it a bit trickier to implement some features that normally work out-of-the-box when using the EyeX SDK. This means that for example the WPF and WinForms integrations that comes with the EyeX SDK for .Net do not work as expected and would need to be manually extended and somewhat modified.