[taler-marketing] branch master updated: han slides

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     new 58f6934  han slides
58f6934 is described below

commit 58f693480d6e526c81ba79008dc228cd46ba61d6
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Sun Sep 11 11:43:38 2022 +0200

    han slides
---
 presentations/comprehensive/han.tex                | 329 +++++++++++++++++++++
 presentations/comprehensive/main.tex               |   8 +-
 .../comprehensive/taler-logo-2021-inkscape.pdf     | Bin 0 -> 2548 bytes
 3 files changed, 333 insertions(+), 4 deletions(-)

diff --git a/presentations/comprehensive/han.tex 
b/presentations/comprehensive/han.tex
new file mode 100644
index 0000000..ab12801
--- /dev/null
+++ b/presentations/comprehensive/han.tex
@@ -0,0 +1,329 @@
+\pdfminorversion=3
+\documentclass[fleqn,xcolor={usenames,dvipsnames}]{beamer}
+\usepackage{amsmath}
+\usepackage{multimedia}
+\usepackage[utf8]{inputenc}
+\usepackage{framed,color,ragged2e}
+\usepackage[absolute,overlay]{textpos}
+\definecolor{shadecolor}{rgb}{0.8,0.8,0.8}
+\usetheme{boxes}
+\setbeamertemplate{navigation symbols}{}
+\usepackage{xcolor}
+\usepackage{tikz,eurosym}
+\usepackage[normalem]{ulem}
+\usepackage{listings}
+\usepackage{adjustbox}
+
+% CSS
+\lstdefinelanguage{CSS}{
+  basicstyle=\ttfamily\scriptsize,
+  
keywords={color,background-image:,margin,padding,font,weight,display,position,top,left,right,bottom,list,style,border,size,white,space,min,width,
 transition:, transform:, transition-property, transition-duration, 
transition-timing-function},
+  sensitive=true,
+  morecomment=[l]{//},
+  morecomment=[s]{/*}{*/},
+  morestring=[b]',
+  morestring=[b]",
+  alsoletter={:},
+  alsodigit={-}
+}
+
+% JavaScript
+\lstdefinelanguage{JavaScript}{
+  basicstyle=\ttfamily\scriptsize,
+  morekeywords={typeof, new, true, false, catch, function, return, null, 
catch, switch, var, if, in, while, do, else, case, break},
+  morecomment=[s]{/*}{*/},
+  morecomment=[l]//,
+  morestring=[b]",
+  morestring=[b]'
+}
+
+\lstdefinelanguage{HTML5}{
+  basicstyle=\ttfamily\scriptsize,
+  language=html,
+  sensitive=true,
+  alsoletter={<>=-},
+  morecomment=[s]{<!-}{-->},
+  tag=[s],
+  otherkeywords={
+  % General
+  >,
+  % Standard tags
+       <!DOCTYPE,
+  </html, <html, <head, <title, </title, <style, </style, <link, </head, 
<meta, />,
+       % body
+       </body, <body,
+       % Divs
+       </div, <div, </div>,
+       % Paragraphs
+       </p, <p, </p>,
+       % scripts
+       </script, <script,
+  % More tags...
+  <canvas, /canvas>, <svg, <rect, <animateTransform, </rect>, </svg>, <video, 
<source, <iframe, </iframe>, </video>, <image, </image>
+  },
+  ndkeywords={
+  % General
+  =,
+  % HTML attributes
+  charset=, src=, id=, width=, height=, style=, type=, rel=, href=,
+  % SVG attributes
+  fill=, attributeName=, begin=, dur=, from=, to=, poster=, controls=, x=, y=, 
repeatCount=, xlink:href=,
+  % CSS properties
+  margin:, padding:, background-image:, border:, top:, left:, position:, 
width:, height:,
+       % CSS3 properties
+  transform:, -moz-transform:, -webkit-transform:,
+  animation:, -webkit-animation:,
+  transition:,  transition-duration:, transition-property:, 
transition-timing-function:,
+  }
+}
+
+\lstdefinelanguage{JavaScript}{
+  basicstyle=\ttfamily\scriptsize,
+  keywords={typeof, new, true, false, catch, function, return, null, catch, 
switch, var, if, in, while, do, else, case, break, for},
+  keywordstyle=\color{blue}\bfseries,
+  ndkeywords={class, export, boolean, throw, implements, import, this},
+  ndkeywordstyle=\color{darkgray}\bfseries,
+  identifierstyle=\color{black},
+  sensitive=false,
+  comment=[l]{//},
+  morecomment=[s]{/*}{*/},
+  commentstyle=\color{purple}\ttfamily,
+  stringstyle=\color{red}\ttfamily,
+  morestring=[b]',
+  morestring=[b]"
+}
+
+\usetikzlibrary{shapes,arrows}
+\usetikzlibrary{positioning}
+\usetikzlibrary{calc}
+
+\title{GNU Taler}
+%\subtitle{}
+
+\setbeamertemplate{navigation symbols}{\includegraphics[width=1cm]{inria.pdf} 
\includegraphics[width=2.3cm]{bfh.png} \includegraphics[width=1.6cm]{fub.pdf} 
\includegraphics[width=0.4cm]{ashoka.png}  
\includegraphics[width=0.4cm]{gnu.png} 
\includegraphics[width=1cm]{logo-2020.jpg} \hfill}
+%\setbeamercovered{transparent=1}
+
+\author[C. Grothoff]{J. Burdges, F. Dold, {\bf C. Grothoff}, M. Stanisci}
+\date{\today}
+\institute{The GNU Project}
+
+
+\begin{document}
+
+\justifying
+
+\begin{frame}
+  \begin{center}
+    \LARGE {\bf GNU}
+
+    \vfill
+%    \includegraphics[width=0.66\textwidth]{logo-2017-fr.pdf}
+    \includegraphics[width=0.66\textwidth]{taler-logo-2021-inkscape.pdf}
+  \end{center}
+\begin{textblock*}{6cm}(.5cm,7.7cm) % {block width} (coords)
+    {\Large {\bf \href{https://taler.net/}{taler.net}} \\
+    \href{https://twitter.com/taler}{taler@twitter} \\
+    \href{https://taler-systems.com/}{taler-systems.com}}
+\end{textblock*}
+
+% Substitute based on who is giving the talk!
+ \begin{textblock*}{6cm}(6.7cm,7.7cm) % {block width} (coords)
+   {\hfill {\Large {\bf Florian Dold \&} \\
+    \hfill {\bf Christian Grothoff}} \\
+    \hfill \{dold,grothoff\}@taler.net }
+\end{textblock*}
+
+\end{frame}
+
+
+\begin{frame}{GNU Taler}
+  \vfill
+  \begin{center}
+    {\huge {\bf Digital} cash, made \textbf{socially responsible}.}
+  \end{center}
+  \vfill
+  \begin{center}
+  \includegraphics[scale=0.3]{taler-logo-2021-inkscape.pdf}
+  \end{center}
+  \vfill
+  \begin{center}
+    Privacy-Preserving, Practical, Taxable, Free Software, Efficient
+  \end{center}
+ \vfill
+ \vfill
+\ %
+\end{frame}
+
+
+\section{What is Taler?}
+\begin{frame}{What is Taler?}
+  \begin{center}
+Taler is an electronic instant payment system.
+  \end{center}
+  \begin{itemize}
+  \item Uses electronic coins stored in {\bf wallets} on customer's device
+  \item Like {\bf cash}
+  \item Pay in {\bf existing currencies} (i.e. EUR, USD, BTC), \\
+    or use it to create new {\bf regional currencies}
+  \end{itemize}
+  \vfill
+  \pause
+ \noindent
+ However, Taler is
+  \begin{itemize}
+    \item \emph{not} a currency
+    \item \emph{not} a long-term store of value
+    \item \emph{not} a network or instance of a system
+    \item \emph{not} decentralized
+    \item \emph{not} based on proof-of-work or proof-of-stake
+    \item \emph{not} a speculative asset / ``get-rich-quick scheme''
+  \end{itemize}
+\end{frame}
+
+
+\begin{frame}{Design principles}
+  \framesubtitle{https://taler.net/en/principles.html}
+GNU Taler must ...
+\begin{enumerate}
+  \item {... be implemented as {\bf free software}.}
+  \item {... protect the {\bf privacy of buyers}.}
+  \item {... must enable the state to {\bf tax income} and crack down on
+    illegal business activities.}
+  \item {... prevent payment fraud.}
+  \item {... only {\bf disclose the minimal amount of information
+    necessary}.}
+  \item {... be usable.}
+  \item {... be efficient.}
+  \item {... avoid single points of failure.}
+  \item {... foster {\bf competition}.}
+\end{enumerate}
+\end{frame}
+
+
+\begin{frame}{Social Impact of Taler}
+  \begin{center}
+    \includegraphics[height=0.9\textheight]{../../social-impact.pdf}
+  \end{center}
+\end{frame}
+
+
+\begin{frame}
+\frametitle{Taler Overview}
+\begin{center}
+  \includegraphics[width=1\textwidth]{operations.png}
+\end{center}
+\end{frame}
+
+
+\begin{frame}[c]{Example: The Taler Snack Machine\footnote{by M. Boss and D. 
Hofer}}
+  \framesubtitle{Integration of a MDB/ICP to Taler gateway.\\Implementation of 
a NFC or QR-Code to Taler wallet interface.}
+       \vfill
+       \begin{figure}
+  \centering
+  \includegraphics[width=1.0\textwidth]{design}
+  \end{figure}
+\end{frame}
+
+
+\begin{frame}[c]{User story: Install App on Android}
+\framesubtitle{\url{https://wallet.taler.net/}}
+               \begin{figure}
+                       
\includegraphics[width=0.9\textwidth]{download_wallet.png}
+               \end{figure}
+\end{frame}
+
+\begin{frame}{User story: Withdraw e-cash}
+               \begin{figure}
+                       
\includegraphics[width=0.9\textwidth]{get_taler_coins.png}
+               \end{figure}
+\end{frame}
+
+\begin{frame}{User story: Use machine!}
+               \begin{figure}
+                       \includegraphics[width=0.9\textwidth]{get_snacks.png}
+               \end{figure}
+\end{frame}
+
+
+\begin{frame}{Usability of Taler}
+  \vfill
+  \begin{center}
+    \url{https://demo.taler.net/}
+  \end{center}
+  \begin{enumerate}
+  \item Install browser extension.
+  \item Visit the {\tt bank.demo.taler.net} to withdraw coins.
+  \item Visit the {\tt shop.demo.taler.net} to spend coins.
+  \end{enumerate}
+  \vfill
+\end{frame}
+
+
+\begin{frame}{Known Design Challenges}
+\begin{itemize}
+    \item How to make the wallets more accessible? (Say to blind users?)
+    \item Android QR-scan button was not identified by a user. What to do?
+    \item How can get users to understand self-custody and its implications?
+    \item How can we best explain the fee structure?
+    \item How can we systematically ensure error messages are understandable?
+  \end{itemize}
+\end{frame}
+
+
+\begin{frame}{How to support?}
+  \begin{description}
+    \item[Join:] {\small \url{https://lists.gnu.org/mailman/listinfo/taler}}, 
\\
+                 \url{https://libera.chat/\#taler}
+    \item[Develop:] \url{https://bugs.taler.net/}, \url{https://git.taler.net/}
+    \item[Translate:] \url{https://weblate.taler.net/}, 
\url{translation-volunteer@taler.net}
+    \item[Integrate:] \url{https://docs.taler.net/}
+    \item[Donate:] \url{https://gnunet.org/ev}
+    \item[Invest:] \url{https://taler-systems.com/}
+  \end{description}
+  \begin{center}
+    {\bf The team is eager to work with design students for projects or 
theses!}
+  \end{center}
+\end{frame}
+
+
+\begin{frame}{Conclusion}
+\begin{itemize}
+ \item Replacing authentication with authorization improves usability
+ \item Privacy and security do not have to hurt usability
+ \item Self-custody requires good solutions to existing challenges
+\end{itemize}
+\end{frame}
+
+
+\begin{frame}
+\frametitle{Do you have any questions?}
+\vfill
+References:
+{\tiny
+  \begin{enumerate}
+ \item{David Chaum, Christian Grothoff and Thomas Moser.
+       {\em How to issue a central bank digital currency}.
+       {\bf SNB Working Papers, 2021}.}
+ \item{Christian Grothoff, Bart Polot and Carlo von Loesch.
+       {\em The Internet is broken: Idealistic Ideas for Building a GNU 
Network}.
+       {\bf W3C/IAB Workshop on Strengthening the Internet Against Pervasive 
Monitoring (STRINT)}, 2014.}
+ \item{Jeffrey Burdges, Florian Dold, Christian Grothoff and Marcello Stanisci.
+       {\em Enabling Secure Web Payments with GNU Taler}.
+       {\bf SPACE 2016}.}
+ \item{Florian Dold, Sree Harsha Totakura, Benedikt M\"uller, Jeffrey Burdges 
and Christian Grothoff.
+       {\em Taler: Taxable Anonymous Libre Electronic Reserves}.
+       Available upon request. 2016.}
+ \item{Eli Ben-Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian 
Miers, Eran Tromer and Madars Virza.
+       {\em Zerocash: Decentralized Anonymous Payments from Bitcoin}.
+       {\bf IEEE Symposium on Security \& Privacy, 2016}.}
+ \item{David Chaum, Amos Fiat and Moni Naor.
+       {\em Untraceable electronic cash}.
+       {\bf Proceedings on Advances in Cryptology, 1990}.}
+  \item{Phillip Rogaway.
+       {\em The Moral Character of Cryptographic Work}.
+       {\bf Asiacrypt}, 2015.} \label{bib:rogaway}
+\end{enumerate}
+}
+\end{frame}
+
+\end{document}
diff --git a/presentations/comprehensive/main.tex 
b/presentations/comprehensive/main.tex
index 94bc91d..a7abe02 100644
--- a/presentations/comprehensive/main.tex
+++ b/presentations/comprehensive/main.tex
@@ -100,7 +100,7 @@
 \title{GNU Taler}
 %\subtitle{}
 
-\setbeamertemplate{navigation symbols}{\includegraphics[width=1cm]{inria.pdf} 
\includegraphics[width=2.3cm]{bfh.png} \includegraphics[width=1.6cm]{fub.pdf} 
\includegraphics[width=0.4cm]{ashoka.png}  
\includegraphics[width=0.4cm]{gnu.png} 
\includegraphics[width=1cm]{logo-2020.jpg} \hfill}
+\setbeamertemplate{navigation symbols}{\includegraphics[width=1cm]{inria.pdf} 
\includegraphics[width=2.3cm]{bfh.png} \includegraphics[width=1.6cm]{fub.pdf} 
\includegraphics[width=0.4cm]{ashoka.png}  
\includegraphics[width=0.4cm]{gnu.png} 
\includegraphics[width=1cm]{taler-logo-2021-inkscape.pdf} \hfill}
 %\setbeamercovered{transparent=1}
 
 \author[C. Grothoff]{J. Burdges, F. Dold, {\bf C. Grothoff}, M. Stanisci}
@@ -118,7 +118,7 @@
 
     \vfill
 %    \includegraphics[width=0.66\textwidth]{logo-2017-fr.pdf}
-    \includegraphics[width=0.66\textwidth]{logo-2020.jpg}
+    \includegraphics[width=0.66\textwidth]{taler-logo-2021-inkscape.pdf}
   \end{center}
 \begin{textblock*}{6cm}(.5cm,7.7cm) % {block width} (coords)
     {\Large {\bf \href{https://taler.net/}{taler.net}} \\
@@ -279,7 +279,7 @@ ZeroCoin, CryptoNote (Monero) and ZeroCash (ZCash) offer 
anonymity.
   \end{center}
   \vfill
   \begin{center}
-  \includegraphics[scale=1]{logo-2020.jpg}
+  \includegraphics[scale=0.3]{taler-logo-2021-inkscape.pdf}
   \end{center}
   \vfill
   \begin{center}
@@ -1571,7 +1571,7 @@ Central banks should also consider funding research to 
improve:
 \begin{frame}{How to support?}
   \begin{description}
     \item[Join:] {\small \url{https://lists.gnu.org/mailman/listinfo/taler}}, 
\\
-                 \url{irc://irc.freenode.net/\#taler}
+                 \url{https://libera.chat/\#taler}
     \item[Develop:] \url{https://bugs.taler.net/}, \url{https://git.taler.net/}
     \item[Translate:] \url{https://weblate.taler.net/}, 
\url{translation-volunteer@taler.net}
     \item[Integrate:] \url{https://docs.taler.net/}
diff --git a/presentations/comprehensive/taler-logo-2021-inkscape.pdf 
b/presentations/comprehensive/taler-logo-2021-inkscape.pdf
new file mode 100644
index 0000000..368483d
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