diff -r 3c69029f4a1c -r 03d5c3df745e slides/slides02.tex
--- a/slides/slides02.tex	Mon Sep 28 00:00:45 2015 +0100
+++ b/slides/slides02.tex	Mon Sep 28 00:16:15 2015 +0100
@@ -133,6 +133,105 @@
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  
 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[c]
+\frametitle{\Large\begin{tabular}{c}User-Tracking Without Cookies\end{tabular}}
+
+Can you track a user {\bf without}:
+
+\begin{itemize}
+\item Cookies
+\item JavaScript
+\item LocalStorage/SessionStorage/GlobalStorage
+\item Flash, Java or other plugins
+\item Your IP address or user agent string
+\item Any methods employed by Panopticlick\\
+\mbox{}\hfill $\rightarrow$ \textcolor{blue}{\url{https://panopticlick.eff.org/}}
+\end{itemize}
+
+Even when you disabled cookies entirely, have JavaScript turned off and use a VPN 
+service, and also \ldots
+
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}
+\frametitle{Verizon}
+\mbox{}\\[-23mm]\mbox{} 
+
+\begin{center}
+\includegraphics[scale=0.21]{../pics/verizon.png}
+\end{center}
+\vfill\footnotesize
+\url{http://webpolicy.org/2014/10/24/how-verizons-advertising-header-works}
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[c]
+\frametitle{Web-Protocol}
+
+\only<1->{
+\begin{textblock}{1}(2,2)
+  \begin{tikzpicture}[scale=1.3]
+  \draw[white] (0,0) node (X) {\includegraphics[scale=0.12]{../pics/firefox.jpg}};
+  \end{tikzpicture}
+\end{textblock}}
+
+\only<1->{
+\begin{textblock}{1}(11,2)
+  \begin{tikzpicture}[scale=1.3]
+  \draw[white] (0,0) node (X) {\includegraphics[scale=0.15]{../pics/servers.png}};
+  \end{tikzpicture}
+\end{textblock}}
+
+\only<1->{
+\begin{textblock}{1}(5,2.5)
+  \begin{tikzpicture}[scale=1.3]
+  \draw[white] (0,0) node (X) {};
+  \draw[white] (3,0) node (Y) {};
+  \draw[red, ->, line width = 2mm] (X) -- (Y);
+  \node [inner sep=5pt,label=above:\textcolor{black}{\small GET static.jpg}] at ($ (X)!.5!(Y) $) {};
+  \end{tikzpicture}
+\end{textblock}}
+
+\only<2->{
+\begin{textblock}{1}(5,6)
+  \begin{tikzpicture}[scale=1.3]
+  \draw[white] (0,0) node (X) {};
+  \draw[white] (3,0) node (Y) {};
+  \draw[red, <-, line width = 2mm] (X) -- (Y);
+  \node [inner sep=5pt,label=below:\textcolor{black}{\small ETag: 7b33de1}] at ($ (X)!.5!(Y) $) {};
+   \node [inner sep=5pt,label=above:{\includegraphics[scale=0.15]{../pics/tvtestscreen.jpg}}] at ($ (X)!.5!(Y) $) {};
+  \end{tikzpicture}
+\end{textblock}}
+
+\only<3->{
+\begin{textblock}{1}(4.2,11)
+  \begin{tikzpicture}[scale=1.3]
+  \draw[white] (0,0) node (X) {};
+  \draw[white] (3,0) node (Y) {};
+  \draw[red, ->, line width = 2mm] (X) -- (Y);
+  \node [inner sep=5pt,label=above:\textcolor{black}{\small GET static.jpg ETag: 7b33de1}] at ($ (X)!.5!(Y) $) {};
+  \end{tikzpicture}
+\end{textblock}}
+
+\only<4->{
+\begin{textblock}{1}(4.2,13.9)
+  \begin{tikzpicture}[scale=1.3]
+  \draw[white] (0,0) node (X) {};
+  \draw[white] (3,0) node (Y) {};
+  \draw[red, <-, line width = 2mm] (X) -- (Y);
+  \node [inner sep=5pt,label=below:\textcolor{black}{\small HTTP/1.1 304 (Not Modified)}] at ($ (X)!.5!(Y) $) {};
+  \end{tikzpicture}
+\end{textblock}}
+
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
 \frametitle{Today's Lecture}
@@ -913,7 +1012,7 @@
 \begin{columns}[b]
 \begin{column}{.4\textwidth}
 \centering
-\includegraphics[scale=1.2]{../pics/barrier.jpg}\\
+\includegraphics[scale=0.3]{../pics/barrier.jpg}\\
 first lecture
 \end{column}
 \begin{column}<2>{.4\textwidth}