commit d528dd45dc969e7d5d4af92274fd2e8641ebac6d
parent e0f96746c824bf53da30cf1b86304a0be4a3b8e4
Author: Emmanuel Benoist <emmanuel.benoist@bfh.ch>
Date: Wed, 23 Apr 2025 08:48:28 +0200
Very first version of the slides for EURO Dig 2025
Diffstat:
6 files changed, 105 insertions(+), 16 deletions(-)
diff --git a/presentations/2025-eurodig/slides/images/Apple_logo_black.jpg b/presentations/2025-eurodig/slides/images/Apple_logo_black.jpg
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diff --git a/presentations/2025-eurodig/slides/images/Apple_logo_black.svg b/presentations/2025-eurodig/slides/images/Apple_logo_black.svg
@@ -0,0 +1,3 @@
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+</svg>
+\ No newline at end of file
diff --git a/presentations/2025-eurodig/slides/images/Google_play_logo.jpg b/presentations/2025-eurodig/slides/images/Google_play_logo.jpg
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diff --git a/presentations/2025-eurodig/slides/images/Google_play_logo.svg b/presentations/2025-eurodig/slides/images/Google_play_logo.svg
@@ -0,0 +1,9 @@
+<svg class="kOqhQd" aria-hidden="true" viewBox="0 0 40 40" xmlns="http://www.w3.org/2000/svg">
+<path fill="none" d="M0,0h40v40H0V0z">
+</path><g>
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+</g>
+</svg>
diff --git a/presentations/2025-eurodig/slides/images/taler-logo-2021-inkscape.pdf b/presentations/2025-eurodig/slides/images/taler-logo-2021-inkscape.pdf
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diff --git a/presentations/2025-eurodig/slides/slides-EuroDIG2025.tex b/presentations/2025-eurodig/slides/slides-EuroDIG2025.tex
@@ -128,17 +128,93 @@
% 3 tiers architecture
+\section{Introduction to GNU Taler}
+\begin{frame}{GNU Taler}
+ \vfill
+ \begin{center}
+ {\huge {\bf Digital} cash, made \textbf{socially responsible}.}
+ \end{center}
+ \vfill
+ \begin{center}
+ \includegraphics[width=0.5\textwidth]{images/taler-logo-2021-inkscape.pdf}
+ \end{center}
+ \vfill
+ \begin{center}
+ Privacy-Preserving, Practical, Taxable, Free Software, Efficient
+ \end{center}
+ \vfill
+ \vfill
+\ %
+\end{frame}
-\begin{frame}
- \frametitle{Taler a privacy preserving payment system}
+\begin{frame}{What is GNU Taler?}
+ \framesubtitle{\url{https://taler.net/en/features.html}}
+ \noindent
+GNU Taler is
+ \vfill
+ \begin{itemize}
+ \item a Free/Libre software \emph{payment system} infrastructure project
+ \item ... with a surrounding software ecosystem
+ \item ... and a company (Taler Systems S.A.) and community that wants to deploy it
+ as widely as possible.
+ \end{itemize}
+ \vfill
+\noindent
+However, GNU 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}
+ \vfill
+\end{frame}
-
+\begin{frame}{Design goals for the GNU Taler Payment System}
+ 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}
+\frametitle{GNU Taler Overview}
+\begin{center}
+\begin{tikzpicture}
+ \tikzstyle{def} = [node distance= 5em and 6.5em, inner sep=1em, outer sep=.3em];
+ \node (origin) at (0,0) {};
+ \node (exchange) [def,above=of origin,draw]{Exchange};
+ \node (customer) [def, draw, below left=of origin] {Customer};
+ \node (merchant) [def, draw, below right=of origin] {Merchant};
+% \node (auditor) [def, draw, above right=of origin]{Auditor};
+ \tikzstyle{C} = [color=black, line width=1pt]
+ \draw [<-, C] (customer) -- (exchange) node [midway, above, sloped] (TextNode) {withdraw coins};
+ \draw [<-, C] (exchange) -- (merchant) node [midway, above, sloped] (TextNode) {deposit coins};
+ \draw [<-, C] (merchant) -- (customer) node [midway, above, sloped] (TextNode) {spend coins};
+% \draw [<-, C] (exchange) -- (auditor) node [midway, above, sloped] (TextNode) {verify};
+\end{tikzpicture}
+\end{center}
\end{frame}
-\begin{frame}{Taler : Development plan}
+
+
+\begin{frame}{Taler : Deployment plan}
\begin{block}{In Switzerland}
\begin{itemize}
@@ -162,7 +238,7 @@
-\section{Customer UX}
+\section{Customer user expirience}
% Install the wallet
% Withdraw money Play money (maybe add demo exchange if needed).
@@ -175,12 +251,13 @@
\begin{frame}
- \frametitle{Install the app in your phone}
+ \frametitle{Install the app on your phone}
\begin{columns}
\begin{column}{0.47\textwidth}
\begin{center}
- \Large Apple App Store
-
+ Apple App Store
+
+ \includegraphics[width=0.3\textwidth]{./images/Apple_logo_black.jpg}
\includegraphics[width=0.6\textwidth]{./qr-codes/QR-Code-Apple-app-store.png}
\end{center}
@@ -190,8 +267,9 @@
\begin{center}
Google Play Store
-
- \includegraphics[width=0.6\textwidth]{./qr-codes/QR-Code-Google-Play-store.png}
+
+ \includegraphics[width=0.3\textwidth]{./images/Google_play_logo.jpg}
+ \includegraphics[width=0.6\textwidth]{./qr-codes/QR-Code-Google-Play-store.png}
\end{center}
\end{column}
@@ -374,7 +452,7 @@ for Android, ...):
\begin{columns}
\begin{column}{0.45\textwidth}
- \begin{block}{On the Merchant backent}
+ \begin{block}{Access the merchant backend}
\end{block}
\begin{center}
\includegraphics[width=0.4\textwidth]{./images/QR-code-backend.demo.taler.net.png}
@@ -423,9 +501,7 @@ curl --request GET \
\begin{frame}[fragile,fragile]
\frametitle{Insert a new order}
- \begin{block}{Create an order for the product 1}
-
- \end{block}
+
\begin{verbatim}
curl --request POST \
--url https://backend.demo.taler.net/instances/sandbox/private/orders \
@@ -491,10 +567,11 @@ curl --request POST \
\end{frame}
-\begin{frame}
+\begin{frame}[fragile]
\frametitle{Generate the payment URL}
\begin{block}{URL : "https://"+Host +"/orders/" + payment ID}
+ \end{block}
% To get the QR Code
\begin{verbatim}
@@ -509,7 +586,6 @@ https://backend.demo.taler.net/instances/sandbox/private/orders/2025.112-02CDQQY
taler://pay/backend.demo.taler.net/instances/sandbox/2025.112-02CDQQYASFPPY
\end{verbatim}
- \end{block}
\end{frame}
\section{Questions et réponses}
