Blah limites

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@@ -37,7 +37,20 @@ This is not as trivial as it seems to be at first sight.
 
 \section{The limits}
 
-Haptic wristband for gestural interaction
+During my postdoc at the University of Toronto I worked on the lack of haptic feedback in 3D gestural interaction.
+The Microsoft Kinect\footnote{\href{https://en.wikipedia.org/wiki/Kinect}{https://en.wikipedia.org/wiki/Kinect}} was just released.
+It featured a motion capture system affordable for households.
+It followed the trend of \emph{natural} user interfaces, and was advertised as “\emph{You} are the controller”\footnote{\href{https://news.microsoft.com/2010/10/21/kinect-ads-you-are-the-controller/}{https://news.microsoft.com/2010/10/21/kinect-ads-you-are-the-controller/}}.
+Besides the discussion about the natural aspect of user interfaces in the previous chapter, this motivation to eliminate physical controllers also eliminated many useful, not to say essential, haptic properties of physical controlers.
+This was already an issue with touch interaction, but there was at least the passive haptics of the surface.
+In the case of 3D gestural interaction, the users have no haptic feedback when they interact with virtual objects.
+Therefore, the immediate feedback they need for direct manipulation~\cite{schneiderman83} is essentially visual or auditory.
+This contributes to the overload of these modalities.
+Therefore, I worked on a way to provide haptic feedback for 3D interaction.
+
+The design rationale was to keep the users' hands free since this was the main motivations of this type of sensor.
+Otherwise tactile feedback could be integrated in a controler.
+Therefore we opted for a wearable, with the idea to 
 
 \paragraph{Apparatus}