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+\section{Deposit}
+
+
+
+\begin{figure}[h!]
+  \begin{sequencediagram}
+    \newinst{wallet}{\shortstack{Customer wallet \\
+      \\ \begin{tikzpicture}
+        \node [fill=gray!20,draw=black,thick,align=center] { Unique \\ Wallet ID};
+      \end{tikzpicture}
+    }}
+    \newinst[2]{exchange}{\shortstack{Taler (exchange) \\
+       \\ \begin{tikzpicture}[shape aspect=.5]
+        \tikzset{every node/.style={cylinder,shape border rotate=90, draw,fill=gray!25}}
+        \node at (1.5,0) {\shortstack{{{\tiny Database}}}};
+       \end{tikzpicture}
+    }}
+    \newinst[2]{bank}{\shortstack{Customer bank \\
+      \\ \begin{tikzpicture}
+        \node [fill=gray!20,draw=black,thick,align=center] {Checking \\ Accounts};
+      \end{tikzpicture}
+    }}
+    \postlevel
+    \begin{callself}{wallet}{Review deposit fees}{}
+    \end{callself}
+    \mess[0]{wallet}{Deposit {(Coins)}}{exchange}
+    \begin{sdblock}{Acceptable account?}{}
+    \mess[0]{exchange}{{Refuse deposit}}{wallet}
+    \end{sdblock}
+    \begin{sdblock}{KYC/AML required?}{}
+    \begin{callself}{exchange}{Figures~\ref{fig:proc:kyc}, \ref{fig:proc:aml}}{}
+    \end{callself}
+    \end{sdblock}
+%    \prelevel
+%    \prelevel
+%    \begin{sdblock}{User abort?}{}
+%    \mess[0]{wallet}{{Request abort}}{exchange}
+%    \mess[0]{exchange}{{Abort confirmation}}{wallet}
+%    \end{sdblock}
+    \mess[0]{exchange}{{Initiate transfer}}{bank}
+
+\end{sequencediagram}
+  \caption{Deposit interactions between customer, Taler exchange (payment
+    service provider) and customer's bank.}
+  \label{fig:int:deposit}
+\end{figure}
+
+We do {\bf not} permit the customer to regain control over their funds {\em
+  unless} they pass the KYC/AML checks. The technical reason is simply that
+the KYC/AML checks happen {\em after} the aggregation logic and at this point
+refunds are no longer permitted.  From a compliance perspective, this also
+prevents malicious customers from risk-free probing of the system.