We just bought a touch screen (http://www.amazon.es/dp/B00AJAGH8K) and tried it with blender.
Modelling with blender ran fine, simple touch is a left click and prolonged touch is a right click.
But in BGE one simple touch was not working as expected. It did nothing. And when we did “touch and drag” BGE detected as a left mouse event!!
Here is a video with the example. https://db.tt/xgBrcnEY
Anybody here that had the same problem?