en.tex (8895B)
1 \documentclass[c]{beamer} 2 3 %\usepackage{helvet} 4 \usepackage{calc} 5 \usepackage[utf8]{inputenc} % set your input encoding differently, if you want 6 \usepackage[english]{babel} 7 8 \usepackage{enumitem} 9 \usepackage{eurosym} 10 \usepackage{tikz} 11 \usepackage{pgfgantt} 12 \usepackage{amsmath,amssymb} 13 \usetikzlibrary{shapes,arrows} 14 \usetikzlibrary{positioning} 15 \usetikzlibrary{calc} 16 \usepackage[absolute,overlay]{textpos} 17 18 %\setbeameroption{show notes} 19 20 \setlist[itemize]{label=$\bullet$} 21 22 23 \def\checkmark{\tikz\fill[scale=0.4](0,.35) -- (.25,0) -- (1,.7) -- (.25,.15) -- cycle;} 24 25 \setbeamertemplate{navigation symbols}{} 26 %\setbeamercovered{transparent=10} 27 \setbeamertemplate{navigation symbols}{\url{taler.net}} 28 %\setbeamertemplate{section in toc}[sections numbered] 29 30 % Adapt title information 31 % ======================= 32 \title{GNU Taler \\ Payments for the Common Good} 33 \institute{The GNU Project} 34 %\author{Christian Grothoff \& Sva} 35 %\date{5.7.2017} 36 37 % Some common packages 38 % ==================== 39 \usepackage{units} 40 \usepackage{amsbsy} 41 \usepackage{amsmath} 42 \usepackage{amssymb} 43 \usepackage{graphics} 44 \usepackage{epsf} 45 \usepackage{epsfig} 46 %\usepackage{fixmath} 47 \usepackage{wrapfig} 48 49 50 \usetikzlibrary{snakes} 51 52 53 \begin{document} 54 55 \begin{frame} 56 \begin{center} 57 GNU Taler: Payments for the Common Good 58 59 % \includegraphics[width=0.66\textwidth]{logo-2017-fr.pdf} 60 \includegraphics[width=0.66\textwidth]{taler-logo-2017.pdf} 61 \end{center} 62 \begin{textblock*}{4cm}(.5cm,6.5cm) % {block width} (coords) 63 {\Large {\bf \url{taler.net}} \\ 64 IRC{\bf \#taler} \\ 65 {\small (on freenode)} \\ 66 twitter@taler \\ 67 mail@taler.net } 68 \end{textblock*} 69 70 \begin{textblock*}{4cm}(8cm,7.5cm) % {block width} (coords) 71 {\hfill {\Large {\bf sva \&} \\ 72 \hfill {\bf grothoff}} \\ 73 \hfill twitter@sva \\ 74 \hfill \{sva,grothoff\}@taler.net } 75 \end{textblock*} 76 77 \end{frame} 78 79 \section{The Problem} 80 \begin{frame}{The Problem} 81 82 3D secure (``verified by visa'') is a nightmare: 83 \begin{minipage}{5cm} 84 \begin{itemize} 85 \item Complicated process 86 \item Shifts liability to consumer 87 \item Significant latency 88 \item Can refuse valid requests 89 \item Legal vendors excluded 90 \item No privacy for buyers 91 \end{itemize} 92 \end{minipage} 93 \begin{minipage}{5cm} 94 \includegraphics[width=\textwidth]{illustrations/cc3ds.pdf} 95 \end{minipage} 96 \vfill 97 Online credit card payments will be replaced, but with what? 98 \end{frame} 99 100 101 \begin{frame}{The Problem} 102 \vfill 103 \begin{textblock*}{12cm}(0.5cm,1cm) % {block width} (coords) 104 \begin{itemize} 105 \item Global tech companies push oligopolies 106 \item Privacy and federated finance are at risk 107 % \item 30\% fees are conceivable 108 \item Economic sovereignty is in danger 109 \end{itemize} 110 \end{textblock*} 111 \begin{textblock*}{4cm}(3.5cm,5.2cm) % {block width} (coords) 112 {\includegraphics[width=\textwidth]{competitor-logos/amazon.png}} 113 \end{textblock*} 114 \begin{textblock*}{2cm}(7cm,3cm) % {block width} (coords) 115 {\includegraphics[width=\textwidth]{competitor-logos/alipay.jpeg}} 116 \end{textblock*} 117 \begin{textblock*}{2cm}(3cm,3.5cm) % {block width} (coords) 118 {\includegraphics[width=\textwidth]{competitor-logos/paypal.jpeg}} 119 \end{textblock*} 120 \begin{textblock*}{2cm}(9cm,5cm) % {block width} (coords) 121 {\includegraphics[width=\textwidth]{competitor-logos/applepay.jpeg}} 122 \end{textblock*} 123 \begin{textblock*}{2cm}(7.5cm,5.9cm) % {block width} (coords) 124 {\includegraphics[width=\textwidth]{competitor-logos/samsungpay.jpeg}} 125 \end{textblock*} 126 \begin{textblock*}{1cm}(9.5cm,6.3cm) % {block width} (coords) 127 {\includegraphics[width=\textwidth]{competitor-logos/android_pay.png}} 128 \end{textblock*} 129 \vfill 130 \end{frame} 131 132 133 \section{What is GNU Taler?} 134 \begin{frame}{What is GNU Taler?} 135 \vfill 136 \begin{center} 137 GNU Taler is an electronic instant payment system. 138 \end{center} 139 \begin{itemize} 140 \item Uses electronic coins stored in {\bf wallets} on customer's device 141 \item Like {\bf cash} 142 \item Pay in {\bf existing currencies} (i.e. EUR, USD, BTC), \\ 143 or use it to create new {\bf regional currencies} 144 \end{itemize} 145 \vfill 146 \end{frame} 147 148 149 \begin{frame} 150 \frametitle{GNU Taler Overview} 151 \begin{center} 152 \begin{tikzpicture} 153 \tikzstyle{def} = [node distance= 5em and 6.5em, inner sep=1em, outer sep=.3em]; 154 \node (origin) at (0,0) {}; 155 \node (exchange) [def,above=of origin,draw]{Exchange}; 156 \node (customer) [def, draw, below left=of origin] {Customer}; 157 \node (merchant) [def, draw, below right=of origin] {Merchant}; 158 % \node (auditor) [def, draw, above right=of origin]{Auditor}; 159 160 \tikzstyle{C} = [color=black, line width=1pt] 161 162 \draw [<-, C] (customer) -- (exchange) node [midway, above, sloped] (TextNode) {withdraw coins}; 163 \draw [<-, C] (exchange) -- (merchant) node [midway, above, sloped] (TextNode) {deposit coins}; 164 \draw [<-, C] (merchant) -- (customer) node [midway, above, sloped] (TextNode) {spend coins}; 165 % \draw [<-, C] (exchange) -- (auditor) node [midway, above, sloped] (TextNode) {verify}; 166 167 \end{tikzpicture} 168 \end{center} 169 \end{frame} 170 % Demo here 171 172 173 \begin{frame}{Social Impact of Taler} 174 \begin{center} 175 \includegraphics[height=0.8\textheight]{social-impact.pdf} 176 \end{center} 177 \end{frame} 178 179 180 \begin{frame}{Use Case: Journalism} 181 Today: 182 \begin{itemize} 183 \item Corporate structure % ($\Rightarrow$ filter) 184 \item Advertising primary revenue % ($\Rightarrow$ dependence) 185 \item Tracking readers critical for business success 186 \item Journalism and marketing hard to distinguish 187 \end{itemize}\vfill\pause 188 With GNU Taler: 189 \begin{itemize} 190 \item One-click micropayments per article 191 \item Hosting requires no expertise % (no PCI DSS) 192 \item Reader-funded reporting separated from marketing 193 \item Readers can remain anonymous 194 \end{itemize} 195 \end{frame} 196 197 198 \begin{frame}{Use Cases: Refugee Camps} 199 Today: 200 \begin{itemize} 201 \item Non-bankable 202 \item Direct distribution of goods to population 203 \item Limited economic activity in camps 204 \item High level of economic dependence 205 \end{itemize}\vfill\pause 206 With GNU Taler: 207 \begin{itemize} 208 \item Local currency issued as basic income backed by aid 209 \item Taxation possible based on economic status 210 \item Local governance enabled by local taxes 211 \item Increased economic independence and political participation 212 \end{itemize} 213 \end{frame} 214 215 216 \begin{frame}{Use Case: Anti-Spam} 217 Today, p$\equiv$p provides authenticated encryption for e-mail: 218 \begin{itemize} 219 \item Free software 220 \item Easy to use opportunistic encryption 221 \item Available for Outlook, Android, Enigmail 222 \item Spies \& spam filters can no longer inspect content 223 \end{itemize}\vfill\pause 224 With GNU Taler: 225 \begin{itemize} 226 \item Peer-to-peer payments via e-mail 227 \item If unsolicited sender, hide messages from user \& 228 automatically request payment from sender 229 \item Sender can attach payment to be moved to inbox 230 \item Receiver may grant refund to sender 231 \end{itemize} 232 \end{frame} 233 234 235 \begin{frame}{How to support?} 236 \begin{itemize} 237 \item Join: \href{https://lists.gnu.org/mailman/listinfo/taler}{taler@gnu.org}, \href{irc://irc.freenode.net/\#taler}{\#taler} 238 \item Coding \& design: \url{https://gnunet.org/bugs/} 239 \item Translation: \url{https://git.taler.net/www.git/tree/locale/fr/LC_MESSAGES/messages.po} 240 \item Integration: \url{https://docs.taler.net/} 241 \item Donations: \url{https://gnunet.org/ev} 242 \item Funding: \url{https://taler.net/en/investors.html} 243 \end{itemize} 244 \end{frame} 245 246 247 \begin{frame} 248 \begin{center} 249 % \includegraphics[width=0.66\textwidth]{logo-2017-fr.pdf} 250 \includegraphics[width=0.66\textwidth]{taler-logo-2017.pdf} 251 \end{center} 252 \vfill 253 \hfill A GNU package 254 \end{frame} 255 256 \section{Comparison} 257 \begin{frame}{Comparison} 258 \begin{center} \small 259 \begin{tabular}{l||c|c|c|c|c} 260 & Cash & Bitcoin & ZCash & Creditcard & GNU Taler \\ \hline \hline 261 Online &$-$$-$$-$ & ++ & ++ & + & +++ \\ \hline 262 Offline & +++ & $-$$-$ & $-$$-$ & + & $-$$-$ \\ \hline 263 Trans. cost & + & $-$$-$$-$ & $-$$-$$-$ & $-$ & ++ \\ \hline 264 Speed & + & $-$$-$$-$ & $-$$-$$-$ & o & ++ \\ \hline 265 Taxation & $-$ & $-$$-$ & $-$$-$$-$ & +++ & +++ \\ \hline 266 Payer-anon & ++ & o & ++ & $-$$-$$-$ & +++ \\ \hline 267 Payee-anon & ++ & o & ++ & $-$$-$$-$ & $-$$-$$-$ \\ \hline 268 Security & $-$ & o & o & $-$$-$ & ++ \\ \hline 269 Conversion & +++ & $-$$-$$-$ & $-$$-$$-$ & +++ & +++ \\ \hline 270 Libre & $-$ & +++ & +++ & $-$ $-$ $-$ & +++ \\ 271 \end{tabular} 272 \end{center} 273 \note{Not having payee-anonymity is a good thing as otherwise money laundering 274 becomes a real problem.} 275 \end{frame} 276 277 278 \end{document}