26   \LARGE Access Control and \\[-3mm] 

    26   \LARGE Access Control and \\[-3mm] 

    27   \LARGE Privacy Policies (1)\\[-6mm] 

    27   \LARGE Privacy Policies (1)\\[-6mm] 

    28   \end{tabular}}

    28   \end{tabular}}

    29 

    29 

    30   \begin{center}

    30   \begin{center}

    32   \end{center}

    32   \end{center}

    33 

    33 

    34   \normalsize

    34   \normalsize

    35   \begin{center}

    35   \begin{center}

    36   \begin{tabular}{ll}  

    36   \begin{tabular}{ll}  

    44 

    44 

    45 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    45 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    46 \begin{frame}

    46 \begin{frame}

    47 

    47 

    48 \begin{center}

    48 \begin{center}

    50 \end{center}

    50 \end{center}

    51 

    51 

    52 \end{frame}

    52 \end{frame}

    53 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

    53 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

    54 

    54 

    56 \begin{frame}

    56 \begin{frame}

    57 

    57 

    58 \begin{center}

    58 \begin{center}

    59 \begin{tikzpicture}[scale=1.3]

    59 \begin{tikzpicture}[scale=1.3]

    60   %\draw[very thick, scale=1] (0, 0) grid (6, -4);

    60   %\draw[very thick, scale=1] (0, 0) grid (6, -4);

    63   \node[below] at (X.south) {Alice};

    63   \node[below] at (X.south) {Alice};

    64   \node[below] at (Y.south) {Bob};

    64   \node[below] at (Y.south) {Bob};

    65   

    65   

    66   \draw[red,<->,line width = 3mm] (X) -- (Y);

    66   \draw[red,<->,line width = 3mm] (X) -- (Y);

    67   \node [inner sep=5pt,label=above:{\begin{tabular}{c}

    67   \node [inner sep=5pt,label=above:{\begin{tabular}{c}

    68                                     secure/private\\

    68                                     secure/private\\

    69                                     communication

    69                                     communication

    70                                     \end{tabular}}] 

    70                                     \end{tabular}}] 

    71   at ($ (X)!.5!(Y) $) {};

    71   at ($ (X)!.5!(Y) $) {};

    72 

    72 

    75   \draw (1.7,-2.3) node {\huge\ldots};

    75   \draw (1.7,-2.3) node {\huge\ldots};

    78   \draw (5.0,-2.3) node {\huge\ldots};

    78   \draw (5.0,-2.3) node {\huge\ldots};

    79 \end{tikzpicture}

    79 \end{tikzpicture}

    80 \end{center}

    80 \end{center}

    81 

    81 

    82 \begin{center}

    82 \begin{center}

    84 \end{center}

    84 \end{center}

    85 

    85 

    86 \end{frame}

    86 \end{frame}

    87 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

    87 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

    88 

    88 

    89 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    89 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    90 \begin{frame}

    90 \begin{frame}

    91 

    91 

    92 \begin{center}

    92 \begin{center}

    94 \end{center}

    94 \end{center}

    95 \small{}\mbox{}\hfill{}

    95 \small{}\mbox{}\hfill{}

    96 Lavabit email service closed down on 8 August 2013. \\

    96 Lavabit email service closed down on 8 August 2013. \\

    97 \mbox{}\hfill{}\url{www.goo.gl/bgSrVp}

    97 \mbox{}\hfill{}\url{www.goo.gl/bgSrVp}

    98 

    98 

   103 \begin{frame}

   103 \begin{frame}

   104 \frametitle{Also Bad Guys}

   104 \frametitle{Also Bad Guys}

   105 

   105 

   106 \begin{textblock}{1}(4,2.5)

   106 \begin{textblock}{1}(4,2.5)

   107   \begin{tikzpicture}[scale=1.3]

   107   \begin{tikzpicture}[scale=1.3]

   110   \draw[red, <->, line width = 2mm] (X) -- (Y);

   110   \draw[red, <->, line width = 2mm] (X) -- (Y);

   111   \end{tikzpicture}

   111   \end{tikzpicture}

   112 \end{textblock}

   112 \end{textblock}

   113 

   113 

   114 \begin{textblock}{1}(1,5)

   114 \begin{textblock}{1}(1,5)

   134 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   134 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   135 \begin{frame}

   135 \begin{frame}

   136 \frametitle{This is a Misconception!}

   136 \frametitle{This is a Misconception!}

   137 

   137 

   138 \begin{center}

   138 \begin{center}

   140 \end{center}

   140 \end{center}

   141 

   141 

   142 \centering

   142 \centering

   143 \begin{bubble}[9cm]

   143 \begin{bubble}[9cm]

   144 \small

   144 \small

   155 three people:\bigskip

   155 three people:\bigskip

   156 

   156 

   157 \small

   157 \small

   158 \begin{center}

   158 \begin{center}

   159 \begin{tabular}{ccc}

   159 \begin{tabular}{ccc}

   163 Bruce Schneier & Ross Anderson & Alex Halderman\\

   163 Bruce Schneier & Ross Anderson & Alex Halderman\\

   164 \tiny\url{en.wikipedia.org/wiki/Bruce_Schneier} & 

   164 \tiny\url{en.wikipedia.org/wiki/Bruce_Schneier} & 

   165 \tiny\url{www.cl.cam.ac.uk/~rja14} & 

   165 \tiny\url{www.cl.cam.ac.uk/~rja14} & 

   166 \tiny\url{jhalderm.com}

   166 \tiny\url{jhalderm.com}

   167 \end{tabular}

   167 \end{tabular}

   199 and sideways. You have to think like an alien.''\hfill{}---Bruce Schneier

   199 and sideways. You have to think like an alien.''\hfill{}---Bruce Schneier

   200 \end{bubble}}

   200 \end{bubble}}

   201 \end{overlayarea}

   201 \end{overlayarea}

   202 

   202 

   203 \begin{flushright}

   203 \begin{flushright}

   208 \end{flushright}

   208 \end{flushright}

   209 

   209 

   210 \end{frame}

   210 \end{frame}

   211 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

   211 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

   212 

   212 

   296 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   296 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   297 \begin{frame}[c]

   297 \begin{frame}[c]

   298 \frametitle{Chip-and-PIN}

   298 \frametitle{Chip-and-PIN}

   299 

   299 

   300 \begin{center}

   300 \begin{center}

   303 \end{center}

   303 \end{center}

   304 

   304 

   305 \begin{itemize}

   305 \begin{itemize}

   306 \item Chip-and-PIN was introduced in the UK in 2004

   306 \item Chip-and-PIN was introduced in the UK in 2004

   307 \item before that customers had to sign a receipt\bigskip

   307 \item before that customers had to sign a receipt\bigskip

   345 \frametitle{But let's see}

   345 \frametitle{But let's see}

   346 

   346 

   347 

   347 

   348 \begin{textblock}{1}(3,4)

   348 \begin{textblock}{1}(3,4)

   349 \begin{tabular}{c}

   349 \begin{tabular}{c}

   351 \small Bank

   351 \small Bank

   352 \end{tabular}

   352 \end{tabular}

   353 \end{textblock}

   353 \end{textblock}

   354 

   354 

   355 \begin{textblock}{1}(7,4.5)

   355 \begin{textblock}{1}(7,4.5)

   356 \begin{tabular}{c}

   356 \begin{tabular}{c}

   358 \end{tabular}

   358 \end{tabular}

   359 \end{textblock}

   359 \end{textblock}

   360 

   360 

   361 \begin{textblock}{1}(4.5,9.9)

   361 \begin{textblock}{1}(4.5,9.9)

   362 \begin{tabular}{c}

   362 \begin{tabular}{c}

   364 \small customer / you

   364 \small customer / you

   365 \end{tabular}

   365 \end{tabular}

   366 \end{textblock}  

   366 \end{textblock}  

   367 

   367 

   368 \only<2->{

   368 \only<2->{

   395 \end{textblock}}

   395 \end{textblock}}

   396 

   396 

   397 \only<4->{  

   397 \only<4->{  

   398 \begin{textblock}{1}(12,6.5)

   398 \begin{textblock}{1}(12,6.5)

   399 \begin{tabular}{c}

   399 \begin{tabular}{c}

   401 \small card\\[-2mm]\small terminal\\[-2mm] \small producer

   401 \small card\\[-2mm]\small terminal\\[-2mm] \small producer

   402 \end{tabular}

   402 \end{tabular}

   403 \end{textblock}

   403 \end{textblock}

   404   

   404   

   405 \begin{textblock}{1}(10,7)

   405 \begin{textblock}{1}(10,7)

   422 \item A ``tamperesitant'' terminal playing Tetris on 

   422 \item A ``tamperesitant'' terminal playing Tetris on 

   423 \href{http://www.youtube.com/watch?v=wWTzkD9M0sU}{youtube}.\smallskip\\

   423 \href{http://www.youtube.com/watch?v=wWTzkD9M0sU}{youtube}.\smallskip\\

   424 \footnotesize(\url{http://www.youtube.com/watch?v=wWTzkD9M0sU})

   424 \footnotesize(\url{http://www.youtube.com/watch?v=wWTzkD9M0sU})

   425 \end{itemize}

   425 \end{itemize}

   426  

   426  

   428   

   428   

   429 \end{frame}

   429 \end{frame}

   430 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   

   430 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   

   431 

   431 

   432 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   432 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   449 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   449 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   450 \begin{frame}[c]

   450 \begin{frame}[c]

   451 \frametitle{Chip-and-PIN is Broken}

   451 \frametitle{Chip-and-PIN is Broken}

   452 

   452 

   453 \begin{flushright}

   453 \begin{flushright}

   456 \end{flushright}

   456 \end{flushright}

   457 

   457 

   458 \begin{itemize}

   458 \begin{itemize}

   459 \item man-in-the-middle attacks by the group around Ross Anderson\medskip

   459 \item man-in-the-middle attacks by the group around Ross Anderson\medskip

   460 \end{itemize}

   460 \end{itemize}

   461 

   461 

   462 \begin{center}

   462 \begin{center}

   464 \end{center}

   464 \end{center}

   465 

   465 

   466 \begin{textblock}{1}(11.5,13.7)

   466 \begin{textblock}{1}(11.5,13.7)

   467 \begin{tabular}{l}

   467 \begin{tabular}{l}

   468 \footnotesize on BBC Newsnight\\[-2mm] 

   468 \footnotesize on BBC Newsnight\\[-2mm] 

   477 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   477 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   478 \begin{frame}[c]

   478 \begin{frame}[c]

   479 \frametitle{\Large Chip-and-PIN is Really Broken}

   479 \frametitle{\Large Chip-and-PIN is Really Broken}

   480 

   480 

   481 \begin{flushright}

   481 \begin{flushright}

   484 \end{flushright}

   484 \end{flushright}

   485 

   485 

   486 \begin{itemize}

   486 \begin{itemize}

   487 \item same group successfully attacked in 2012 card readers and ATM machines

   487 \item same group successfully attacked in 2012 card readers and ATM machines

   488 \item the problem was: several types of ATMs generate poor random numbers, 

   488 \item the problem was: several types of ATMs generate poor random numbers, 

   496 \begin{frame}[c]

   496 \begin{frame}[c]

   497 \frametitle{The Real Problem \ldots}

   497 \frametitle{The Real Problem \ldots}

   498 

   498 

   499 \begin{textblock}{1}(3,4)

   499 \begin{textblock}{1}(3,4)

   500 \begin{tabular}{c}

   500 \begin{tabular}{c}

   502 \small Bank

   502 \small Bank

   503 \end{tabular}

   503 \end{tabular}

   504 \end{textblock}

   504 \end{textblock}

   505 

   505 

   506 \begin{textblock}{1}(7,4.5)

   506 \begin{textblock}{1}(7,4.5)

   507 \begin{tabular}{c}

   507 \begin{tabular}{c}

   509 \end{tabular}

   509 \end{tabular}

   510 \end{textblock}

   510 \end{textblock}

   511 

   511 

   512 \begin{textblock}{1}(12,6.5)

   512 \begin{textblock}{1}(12,6.5)

   513 \begin{tabular}{c}

   513 \begin{tabular}{c}

   515 \small terminal\\[-2mm] \small producer

   515 \small terminal\\[-2mm] \small producer

   516 \end{tabular}

   516 \end{tabular}

   517 \end{textblock}

   517 \end{textblock}

   518 

   518 

   519 \begin{textblock}{1}(4.5,9.9)

   519 \begin{textblock}{1}(4.5,9.9)

   520 \begin{tabular}{c}

   520 \begin{tabular}{c}

   522 \small customer / you

   522 \small customer / you

   523 \end{tabular}

   523 \end{tabular}

   524 \end{textblock}  

   524 \end{textblock}  

   525   

   525   

   526 \begin{textblock}{1}(4.5,7.5)

   526 \begin{textblock}{1}(4.5,7.5)

   593 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   593 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   594 \begin{frame}[c]

   594 \begin{frame}[c]

   595 \frametitle{Being Screwed Again}

   595 \frametitle{Being Screwed Again}

   596 

   596 

   597 \begin{flushright}

   597 \begin{flushright}

   599 \end{flushright}

   599 \end{flushright}

   600 

   600 

   601 \begin{itemize}

   601 \begin{itemize}

   602 \item {\bf Responsibility}\\

   602 \item {\bf Responsibility}\\

   603 ``You understand that you are financially responsible for all uses 

   603 ``You understand that you are financially responsible for all uses 

   612 \begin{frame}[c]

   612 \begin{frame}[c]

   613 \frametitle{Web Applications}

   613 \frametitle{Web Applications}

   614 

   614 

   615 \begin{textblock}{1}(2,5)

   615 \begin{textblock}{1}(2,5)

   616 \begin{tabular}{c}

   616 \begin{tabular}{c}

   618 \small Servers from\\[-2mm] 

   618 \small Servers from\\[-2mm] 

   619 \small Dot.com Inc.

   619 \small Dot.com Inc.

   620 \end{tabular}

   620 \end{tabular}

   621 \end{textblock}

   621 \end{textblock}

   622 

   622 

   634 \end{textblock}

   634 \end{textblock}

   635 

   635 

   636 

   636 

   637 \begin{textblock}{1}(9,5.5)

   637 \begin{textblock}{1}(9,5.5)

   638 \begin{tabular}{c}

   638 \begin{tabular}{c}

   640 \small Client(s)

   640 \small Client(s)

   641 \end{tabular}

   641 \end{tabular}

   642 \end{textblock}

   642 \end{textblock}

   643   

   643   

   644 \begin{textblock}{13}(1,13)  

   644 \begin{textblock}{13}(1,13)  

   684 \begin{frame}[c]

   684 \begin{frame}[c]

   685 \frametitle{Cookies}

   685 \frametitle{Cookies}

   686 

   686 

   687 \begin{textblock}{1}(1.5,5)

   687 \begin{textblock}{1}(1.5,5)

   688 \begin{tabular}{c}

   688 \begin{tabular}{c}

   690 \small Servers from\\[-2mm] 

   690 \small Servers from\\[-2mm] 

   691 \small Dot.com Inc.

   691 \small Dot.com Inc.

   692 \end{tabular}

   692 \end{tabular}

   693 \end{textblock}

   693 \end{textblock}

   694 

   694 

   712 \end{textblock}

   712 \end{textblock}

   713 

   713 

   714 

   714 

   715 \begin{textblock}{1}(9.5,5.5)

   715 \begin{textblock}{1}(9.5,5.5)

   716 \begin{tabular}{c}

   716 \begin{tabular}{c}

   718 \small Client

   718 \small Client

   719 \end{tabular}

   719 \end{tabular}

   720 \end{textblock}

   720 \end{textblock}

   721   

   721   

   722 \only<4->{  

   722 \only<4->{  

   754 \item While cookies are per web-page, this can be easily circumvented.

   754 \item While cookies are per web-page, this can be easily circumvented.

   755 \end{itemize}

   755 \end{itemize}

   756 

   756 

   757 \begin{textblock}{1}(1.5,4.5)

   757 \begin{textblock}{1}(1.5,4.5)

   758 \begin{tabular}{c}

   758 \begin{tabular}{c}

   760 \small Pet Store\\[-2mm] 

   760 \small Pet Store\\[-2mm] 

   761 \small Dot.com\\[-2mm] 

   761 \small Dot.com\\[-2mm] 

   762 \end{tabular}

   762 \end{tabular}

   763 \end{textblock}

   763 \end{textblock}

   764   

   764   

   765 \begin{textblock}{1}(1.5,8)

   765 \begin{textblock}{1}(1.5,8)

   766 \begin{tabular}{c}

   766 \begin{tabular}{c}

   768 \small Dating.com

   768 \small Dating.com

   769 \end{tabular}

   769 \end{tabular}

   770 \end{textblock}  

   770 \end{textblock}  

   771 

   771 

   772 \begin{textblock}{1}(10.5,7.5)

   772 \begin{textblock}{1}(10.5,7.5)

   773 \begin{tabular}{c}

   773 \begin{tabular}{c}

   775 \small Evil-Ad-No\\[-2mm]

   775 \small Evil-Ad-No\\[-2mm]

   776 \small Privacy.com

   776 \small Privacy.com

   777 \end{tabular}

   777 \end{tabular}

   778 \end{textblock}  

   778 \end{textblock}  

   779 

   779 

   780 \begin{textblock}{1}(6,10.5)

   780 \begin{textblock}{1}(6,10.5)

   781 \begin{tabular}{c}

   781 \begin{tabular}{c}

   783 \small you

   783 \small you

   784 \end{tabular}

   784 \end{tabular}

   785 \end{textblock}  

   785 \end{textblock}  

   786 

   786 

   787 \begin{textblock}{1}(4,5)

   787 \begin{textblock}{1}(4,5)

   858 

   858 

   859 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   859 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   860 \begin{frame}[c]

   860 \begin{frame}[c]

   861 

   861 

   862 \begin{center}

   862 \begin{center}

   864 \end{center}

   864 \end{center}

   865 

   865 

   866 \begin{itemize}

   866 \begin{itemize}

   867 \item data integrity needs to be ensured

   867 \item data integrity needs to be ensured

   868 \end{itemize}

   868 \end{itemize}

   988 \begin{textblock}{11}(3,2)

   988 \begin{textblock}{11}(3,2)

   989 \begin{tikzpicture}

   989 \begin{tikzpicture}

   990 \draw (0,0) node[inner sep=2mm,fill=white, ultra thick, draw=red, rounded corners=2mm] 

   990 \draw (0,0) node[inner sep=2mm,fill=white, ultra thick, draw=red, rounded corners=2mm] 

   991 {\normalsize\color{darkgray}

   991 {\normalsize\color{darkgray}

   992 \begin{minipage}{7.5cm}\raggedright\small

   992 \begin{minipage}{7.5cm}\raggedright\small

   994 \end{minipage}};

   994 \end{minipage}};

   995 \end{tikzpicture}

   995 \end{tikzpicture}

   996 \end{textblock}}

   996 \end{textblock}}

   997 

   997 

   998 \end{frame}}

   998 \end{frame}}

  1058 (1 letter - upper case, lower case, digits, symbols $\approx$ 100)

  1058 (1 letter - upper case, lower case, digits, symbols $\approx$ 100)

  1059 

  1059 

  1060 \only<2->{

  1060 \only<2->{

  1061 \begin{textblock}{1}(12,5)

  1061 \begin{textblock}{1}(12,5)

  1062 \begin{tabular}{c}

  1062 \begin{tabular}{c}

  1064 \footnotesize graphics card\\[-1mm]

  1064 \footnotesize graphics card\\[-1mm]

  1065 \footnotesize ca.~\pounds{}300

  1065 \footnotesize ca.~\pounds{}300

  1066 \end{tabular}

  1066 \end{tabular}

  1067 \end{textblock}}

  1067 \end{textblock}}

  1068 

  1068 

  1132 \frametitle{Web-Protocol}

  1132 \frametitle{Web-Protocol}

  1133 

  1133 

  1134 \only<1->{

  1134 \only<1->{

  1135 \begin{textblock}{1}(2,2)

  1135 \begin{textblock}{1}(2,2)

  1136   \begin{tikzpicture}[scale=1.3]

  1136   \begin{tikzpicture}[scale=1.3]

  1138   \end{tikzpicture}

  1138   \end{tikzpicture}

  1139 \end{textblock}}

  1139 \end{textblock}}

  1140 

  1140 

  1141 \only<1->{

  1141 \only<1->{

  1142 \begin{textblock}{1}(11,2)

  1142 \begin{textblock}{1}(11,2)

  1143   \begin{tikzpicture}[scale=1.3]

  1143   \begin{tikzpicture}[scale=1.3]

  1145   \end{tikzpicture}

  1145   \end{tikzpicture}

  1146 \end{textblock}}

  1146 \end{textblock}}

  1147 

  1147 

  1148 \only<1->{

  1148 \only<1->{

  1149 \begin{textblock}{1}(5,2.5)

  1149 \begin{textblock}{1}(5,2.5)

  1160   \begin{tikzpicture}[scale=1.3]

  1160   \begin{tikzpicture}[scale=1.3]

  1161   \draw[white] (0,0) node (X) {};

  1161   \draw[white] (0,0) node (X) {};

  1162   \draw[white] (3,0) node (Y) {};

  1162   \draw[white] (3,0) node (Y) {};

  1163   \draw[red, <-, line width = 2mm] (X) -- (Y);

  1163   \draw[red, <-, line width = 2mm] (X) -- (Y);

  1164   \node [inner sep=5pt,label=below:\textcolor{black}{\small ETag: 7b33de1}] at ($ (X)!.5!(Y) $) {};

  1164   \node [inner sep=5pt,label=below:\textcolor{black}{\small ETag: 7b33de1}] at ($ (X)!.5!(Y) $) {};

  1166   \end{tikzpicture}

  1166   \end{tikzpicture}

  1167 \end{textblock}}

  1167 \end{textblock}}

  1168 

  1168 

  1169 \only<3->{

  1169 \only<3->{

  1170 \begin{textblock}{1}(4.2,11)

  1170 \begin{textblock}{1}(4.2,11)

  1195 

  1195 

  1196 \begin{itemize}

  1196 \begin{itemize}

  1197 \item There is no single book I am following

  1197 \item There is no single book I am following

  1198 

  1198 

  1199   \begin{center}

  1199   \begin{center}

  1202   \end{center}\medskip\pause

  1202   \end{center}\medskip\pause

  1203 

  1203 

  1204 \item The question ``Is this relevant for the exams'' is not appreciated!\medskip\\

  1204 \item The question ``Is this relevant for the exams'' is not appreciated!\medskip\\

  1205 

  1205 

  1206   Whatever is in the homework (and is not marked optional) is relevant for the

  1206   Whatever is in the homework (and is not marked optional) is relevant for the