In Chapter~\ref{bi}, we described how it is possible to modify a user interface to ease user nagivation in a 3D scene, and how the system can exploit it.
In Chapter~\ref{d3}, we presented a streaming system that does not take the interface or the user interaction into account at all.
Hence, it seems natural to us to try to bring back the user interaction into DASH-3D.
In order to do so, we have chosen two angles of attack:
\begin{itemize}
\item we design an interface allowing to navigate in a 3D scene for both desktop and mobile devices;
\item we improve and adapt the bookmarks described in Chapter~\ref{bi} to the context of DASH-3D and to mobile interaction.
In Section~\ref{sb:interaction}, we present the different choices we made for the interfaces, and we describe the new mobile interface.
In Section~\ref{sb:bookmarks}, we describe how we embed the bookmarks into our DASH framework, and how we precompute data in order to improve the quality of experience of the user.
In Section~\ref{sb:evaluation}, we describe the user study we conducted, the data we collected and we analyse this data.
