diff --git a/packages/exchange-backoffice-ui/package.json b/packages/exchange-backoffice-ui/package.json
index 2298ebaa2..f8d6e28bf 100644
--- a/packages/exchange-backoffice-ui/package.json
+++ b/packages/exchange-backoffice-ui/package.json
@@ -27,8 +27,6 @@
     "history": "4.10.1",
     "jed": "1.1.1",
     "preact": "10.11.3",
-    "preact-router": "3.2.1",
-    "qrcode-generator": "^1.4.4",
     "swr": "2.0.3"
   },
   "eslintConfig": {
diff --git a/packages/exchange-backoffice-ui/src/App.tsx b/packages/exchange-backoffice-ui/src/App.tsx
index 95926e634..600131219 100644
--- a/packages/exchange-backoffice-ui/src/App.tsx
+++ b/packages/exchange-backoffice-ui/src/App.tsx
@@ -1,6 +1,6 @@
 import { TranslationProvider } from "@gnu-taler/web-util/browser";
 import { h, VNode } from "preact";
-import { Dashboard } from "./Dashborad.js";
+import { Dashboard } from "./Dashboard.js";
 import "./scss/main.css";
 
 export function App(): VNode {
diff --git a/packages/exchange-backoffice-ui/src/Dashborad.tsx b/packages/exchange-backoffice-ui/src/Dashboard.tsx
similarity index 80%
rename from packages/exchange-backoffice-ui/src/Dashborad.tsx
rename to packages/exchange-backoffice-ui/src/Dashboard.tsx
index 142e1de16..80f33954a 100644
--- a/packages/exchange-backoffice-ui/src/Dashborad.tsx
+++ b/packages/exchange-backoffice-ui/src/Dashboard.tsx
@@ -11,8 +11,8 @@ import {
   XMarkIcon,
 } from "@heroicons/react/24/outline";
 import { ComponentChildren, Fragment, VNode, h } from "preact";
-import { useEffect, useReducer, useRef, useState } from "preact/hooks";
-import { NiceForm } from "./NiceForm.js";
+import { ForwardedRef, forwardRef } from "preact/compat";
+import { useRef, useState } from "preact/hooks";
 import { v1 as form_902_11e_v1 } from "./forms/902_11e.js";
 import { v1 as form_902_12e_v1 } from "./forms/902_12e.js";
 import { v1 as form_902_13e_v1 } from "./forms/902_13e.js";
@@ -21,12 +21,8 @@ import { v1 as form_902_1e_v1 } from "./forms/902_1e.js";
 import { v1 as form_902_4e_v1 } from "./forms/902_4e.js";
 import { v1 as form_902_5e_v1 } from "./forms/902_5e.js";
 import { v1 as form_902_9e_v1 } from "./forms/902_9e.js";
-import { FlexibleForm } from "./forms/index.js";
-import { forwardRef } from "preact/compat";
-import { ForwardedRef } from "preact/compat";
-import { createHashHistory } from "history";
-
-const history = createHashHistory();
+import { Pages } from "./pages.js";
+import { Router, useCurrentLocation } from "./route.js";
 
 /**
  * references between forms
@@ -56,7 +52,7 @@ const history = createHashHistory();
  * 902.4
  */
 
-const allForms = [
+export const allForms = [
   {
     name: "Identification form (902.1e)",
     icon: DocumentDuplicateIcon,
@@ -202,9 +198,10 @@ export function Dashboard({
         />
         <main class="py-10 px-4 sm:px-6 lg:px-8">
           <div class="mx-auto max-w-3xl">
-            <Route
-              onUpdate={(v) => {
-                showFormOnSidebar(v);
+            <Router
+              pageList={pageList}
+              onNotFound={() => {
+                return <div>not found</div>;
               }}
             />
           </div>
@@ -216,54 +213,13 @@ export function Dashboard({
   );
 }
 
-function Route({ onUpdate }: { onUpdate: (v: any) => void }) {
-  const [page, setPage] = useState<undefined | number>();
-  function doSync(path: string) {
-    try {
-      if (path.startsWith("/form")) {
-        const formNumber = path.substring("/form".length);
-        const num = Number.parseInt(formNumber, 10);
-        if (!Number.isNaN(num) && num >= 0 && num < allForms.length) {
-          setPage(num);
-        } else {
-          setPage(undefined);
-        }
-      } else {
-        setPage(undefined);
-      }
-    } catch (e) {
-      setPage(undefined);
-    }
-  }
-  useEffect(() => {
-    doSync(history.location.pathname);
-    return history.listen((location, action) => {
-      doSync(location.pathname);
-    });
-  }, []);
-  if (page !== undefined) {
-    return <Content onUpdate={onUpdate} selectedForm={page} />;
-  }
-  return <div>not found</div>;
-}
-
-function useCurrentLocation() {
-  const [currentLocation, setCurrentLocation] = useState(
-    history.location.pathname,
-  );
-  useEffect(() => {
-    return history.listen((location) => {
-      setCurrentLocation(location.pathname);
-    });
-  });
-  return currentLocation;
-}
+const pageList = Object.values(Pages);
 
 function NavigationBar(
   { isOpen, setOpen }: { isOpen: boolean; setOpen: (v: boolean) => void },
   logRef: ForwardedRef<HTMLPreElement>,
 ) {
-  const currentLocation = useCurrentLocation();
+  const currentLocation = useCurrentLocation(pageList);
   return (
     <Fragment>
       <Transition.Root show={isOpen} as={Fragment}>
@@ -331,30 +287,33 @@ function NavigationBar(
                     <ul role="list" class="flex flex-1 flex-col gap-y-7">
                       <li>
                         <ul role="list" class="-mx-2 space-y-1">
-                          {allForms.map((item, idx) => (
-                            <li key={item.name}>
-                              <a
-                                href={`#/form${idx}`}
-                                class={classNames(
-                                  `/${idx}` === currentLocation
-                                    ? "bg-indigo-700 text-white"
-                                    : "text-indigo-200 hover:text-white hover:bg-indigo-700",
-                                  "group flex gap-x-3 rounded-md p-2 text-sm leading-6 font-semibold",
-                                )}
-                              >
-                                <item.icon
+                          {allForms.map((item, idx) => {
+                            const url = Pages.form.url({ number: String(idx) });
+                            return (
+                              <li key={item.name}>
+                                <a
+                                  href={url}
                                   class={classNames(
-                                    `/${idx}` === currentLocation
-                                      ? "text-white"
-                                      : "text-indigo-200 group-hover:text-white",
-                                    "h-6 w-6 shrink-0",
+                                    url === currentLocation?.path
+                                      ? "bg-indigo-700 text-white"
+                                      : "text-indigo-200 hover:text-white hover:bg-indigo-700",
+                                    "group flex gap-x-3 rounded-md p-2 text-sm leading-6 font-semibold",
                                   )}
-                                  aria-hidden="true"
-                                />
-                                {item.name}
-                              </a>
-                            </li>
-                          ))}
+                                >
+                                  <item.icon
+                                    class={classNames(
+                                      url === currentLocation?.path
+                                        ? "text-white"
+                                        : "text-indigo-200 group-hover:text-white",
+                                      "h-6 w-6 shrink-0",
+                                    )}
+                                    aria-hidden="true"
+                                  />
+                                  {item.name}
+                                </a>
+                              </li>
+                            );
+                          })}
                         </ul>
                       </li>
                       {/* <li>
@@ -384,7 +343,7 @@ function NavigationBar(
                         </li> */}
                       <li class="mt-auto">
                         <a
-                          href="#"
+                          href={Pages.settings.url}
                           class="group -mx-2 flex gap-x-3 rounded-md p-2 text-sm font-semibold leading-6 text-indigo-200 hover:bg-indigo-700 hover:text-white"
                         >
                           <Cog6ToothIcon
@@ -416,30 +375,33 @@ function NavigationBar(
             <ul role="list" class="flex flex-1 flex-col gap-y-7">
               <li>
                 <ul role="list" class="-mx-2 space-y-1">
-                  {allForms.map((item, idx) => (
-                    <li key={item.name}>
-                      <a
-                        href={`#/form${idx}`}
-                        class={classNames(
-                          `/${idx}` === currentLocation
-                            ? "bg-indigo-700 text-white"
-                            : "text-indigo-200 hover:text-white hover:bg-indigo-700",
-                          "group flex gap-x-3 rounded-md p-2 text-sm leading-6 font-semibold",
-                        )}
-                      >
-                        <item.icon
+                  {allForms.map((item, idx) => {
+                    const url = Pages.form.url({ number: String(idx) });
+                    return (
+                      <li key={item.name}>
+                        <a
+                          href={url}
                           class={classNames(
-                            `/${idx}` === currentLocation
-                              ? "text-white"
-                              : "text-indigo-200 group-hover:text-white",
-                            "h-6 w-6 shrink-0",
+                            url === currentLocation?.path
+                              ? "bg-indigo-700 text-white"
+                              : "text-indigo-200 hover:text-white hover:bg-indigo-700",
+                            "group flex gap-x-3 rounded-md p-2 text-sm leading-6 font-semibold",
                           )}
-                          aria-hidden="true"
-                        />
-                        {item.name}
-                      </a>
-                    </li>
-                  ))}
+                        >
+                          <item.icon
+                            class={classNames(
+                              url === currentLocation?.path
+                                ? "text-white"
+                                : "text-indigo-200 group-hover:text-white",
+                              "h-6 w-6 shrink-0",
+                            )}
+                            aria-hidden="true"
+                          />
+                          {item.name}
+                        </a>
+                      </li>
+                    );
+                  })}
                 </ul>
               </li>
               {/* <li>
@@ -469,7 +431,7 @@ function NavigationBar(
                 </li> */}
               <li class="mt-auto">
                 <a
-                  href="#"
+                  href={Pages.settings.url}
                   class="group -mx-2 flex gap-x-3 rounded-md p-2 text-sm font-semibold leading-6 text-indigo-200 hover:bg-indigo-700 hover:text-white"
                 >
                   <Cog6ToothIcon
@@ -490,31 +452,6 @@ function NavigationBar(
   );
 }
 
-function Content({
-  onUpdate,
-  selectedForm,
-}: {
-  onUpdate: (v: any) => void;
-  selectedForm: number;
-}) {
-  const showingFrom = allForms[selectedForm].impl;
-  const storedValue = {
-    fullName: "loggedIn_user_fullname",
-    when: {
-      t_ms: new Date().getTime(),
-    },
-  };
-  useEffect(() => {
-    // initial render
-    onUpdate(storedValue);
-  });
-  return (
-    <Fragment>
-      <NiceForm initial={storedValue} form={showingFrom} onUpdate={onUpdate} />
-    </Fragment>
-  );
-}
-
 function TopBar({ onOpenSidebar }: { onOpenSidebar: () => void }) {
   return (
     <div class="sticky top-0 z-40 flex h-16 shrink-0 items-center gap-x-4 border-b border-gray-200 bg-white px-4 shadow-sm sm:gap-x-6 sm:px-6 lg:px-8">
diff --git a/packages/exchange-backoffice-ui/src/pages.ts b/packages/exchange-backoffice-ui/src/pages.ts
new file mode 100644
index 000000000..b46cf5d51
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/pages.ts
@@ -0,0 +1,25 @@
+import { Home } from "./pages/Home.js";
+import { Settings } from "./pages/Settings.js";
+import { ShowForm } from "./pages/ShowForm.js";
+import { Welcome } from "./pages/Welcome.js";
+import { PageEntry, pageDefinition } from "./route.js";
+
+const home: PageEntry = {
+  url: "#/",
+  view: Home,
+};
+
+const settings: PageEntry = {
+  url: "#/settings",
+  view: Settings,
+};
+const welcome: PageEntry<{ asd?: string; name?: string }> = {
+  url: pageDefinition("#/welcome/:name?"),
+  view: Welcome,
+};
+const form: PageEntry<{ number?: string }> = {
+  url: pageDefinition("#/form/:number?"),
+  view: ShowForm,
+};
+
+export const Pages = { home, settings, welcome, form };
diff --git a/packages/exchange-backoffice-ui/src/pages/Home.tsx b/packages/exchange-backoffice-ui/src/pages/Home.tsx
new file mode 100644
index 000000000..838032d63
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/pages/Home.tsx
@@ -0,0 +1,5 @@
+import { h } from "preact";
+
+export function Home() {
+  return <div>Home</div>;
+}
diff --git a/packages/exchange-backoffice-ui/src/pages/Settings.tsx b/packages/exchange-backoffice-ui/src/pages/Settings.tsx
new file mode 100644
index 000000000..ccff3b210
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/pages/Settings.tsx
@@ -0,0 +1,5 @@
+import { h } from "preact";
+
+export function Settings() {
+  return <div>Settings</div>;
+}
diff --git a/packages/exchange-backoffice-ui/src/pages/ShowForm.tsx b/packages/exchange-backoffice-ui/src/pages/ShowForm.tsx
new file mode 100644
index 000000000..5440ab7e1
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/pages/ShowForm.tsx
@@ -0,0 +1,20 @@
+import { h } from "preact";
+import { allForms } from "../Dashboard.js";
+import { NiceForm } from "../NiceForm.js";
+
+export function ShowForm({ number }: { number?: string }) {
+  const selectedForm = Number.parseInt(number ?? "0", 10);
+  if (Number.isNaN(selectedForm)) {
+    return <div>WHAT! {number}</div>;
+  }
+  const showingFrom = allForms[selectedForm].impl;
+  const storedValue = {
+    fullName: "loggedIn_user_fullname",
+    when: {
+      t_ms: new Date().getTime(),
+    },
+  };
+  return (
+    <NiceForm initial={storedValue} form={showingFrom} onUpdate={() => {}} />
+  );
+}
diff --git a/packages/exchange-backoffice-ui/src/pages/Welcome.tsx b/packages/exchange-backoffice-ui/src/pages/Welcome.tsx
new file mode 100644
index 000000000..433fbcf59
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/pages/Welcome.tsx
@@ -0,0 +1,9 @@
+import { h } from "preact";
+
+export function Welcome({ name, asd }: { asd?: string; name?: string }) {
+  return (
+    <div>
+      {asd} Hello {name}
+    </div>
+  );
+}
diff --git a/packages/exchange-backoffice-ui/src/route.ts b/packages/exchange-backoffice-ui/src/route.ts
new file mode 100644
index 000000000..ed6d8058d
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/route.ts
@@ -0,0 +1,167 @@
+import { createHashHistory } from "history";
+import { VNode } from "preact";
+import { useEffect, useState } from "preact/hooks";
+const history = createHashHistory();
+
+type PageDefinition<DynamicPart extends Record<string, string>> = {
+  pattern: string;
+  (params: DynamicPart): string;
+};
+
+function replaceAll(
+  pattern: string,
+  vars: Record<string, string>,
+  values: Record<string, string>,
+): string {
+  let result = pattern;
+  for (const v in vars) {
+    result = result.replace(vars[v], !values[v] ? "" : values[v]);
+  }
+  return result;
+}
+
+export function pageDefinition<T extends Record<string, string>>(
+  pattern: string,
+): PageDefinition<T> {
+  const patternParams = pattern.match(/(:[\w?]*)/g);
+  if (!patternParams)
+    throw Error(
+      `page definition pattern ${pattern} doesn't have any parameter`,
+    );
+
+  const vars = patternParams.reduce((prev, cur) => {
+    const pName = cur.match(/(\w+)/g);
+
+    //skip things like :? in the path pattern
+    if (!pName || !pName[0]) return prev;
+    const name = pName[0];
+    return { ...prev, [name]: cur };
+  }, {} as Record<string, string>);
+
+  const f = (values: T): string => replaceAll(pattern, vars, values);
+  f.pattern = pattern;
+  return f;
+}
+
+export type PageEntry<T = unknown> = T extends Record<string, string>
+  ? {
+      url: PageDefinition<T>;
+      view: (props: T) => VNode;
+    }
+  : T extends unknown
+  ? {
+      url: string;
+      view: (props: {}) => VNode;
+    }
+  : never;
+
+export function Router({
+  pageList,
+  onNotFound,
+}: {
+  pageList: Array<PageEntry<any>>;
+  onNotFound: () => VNode;
+}): VNode {
+  const current = useCurrentLocation(pageList);
+  if (current !== undefined) {
+    return current.page.view(current.values ?? {});
+  }
+  return onNotFound();
+}
+
+type Location = {
+  page: PageEntry<any>;
+  path: string;
+  values: Record<string, string>;
+};
+export function useCurrentLocation(pageList: Array<PageEntry<any>>) {
+  const [currentLocation, setCurrentLocation] = useState<Location>();
+  /**
+   * Search path in the pageList
+   * get the values from the path found
+   * add params from searchParams
+   *
+   * @param path
+   * @param params
+   */
+  function doSync(path: string, params: URLSearchParams) {
+    let result: typeof currentLocation;
+    for (let idx = 0; idx < pageList.length; idx++) {
+      const page = pageList[idx];
+      if (typeof page.url === "string") {
+        if (page.url === path) {
+          const values: Record<string, string> = {};
+          params.forEach((v, k) => {
+            values[k] = v;
+          });
+          result = { page, values, path };
+          break;
+        }
+      } else {
+        const values = doestUrlMatchToRoute(path, page.url.pattern);
+        if (values !== undefined) {
+          params.forEach((v, k) => {
+            values[k] = v;
+          });
+          result = { page, values, path };
+          break;
+        }
+      }
+    }
+    setCurrentLocation(result);
+  }
+  useEffect(() => {
+    doSync(window.location.hash, new URLSearchParams(window.location.search));
+    return history.listen(() => {
+      doSync(window.location.hash, new URLSearchParams(window.location.search));
+    });
+  }, []);
+  return currentLocation;
+}
+
+function doestUrlMatchToRoute(
+  url: string,
+  route: string,
+): undefined | Record<string, string> {
+  const paramsPattern = /(?:\?([^#]*))?$/;
+  // const paramsPattern = /(?:\?([^#]*))?(#.*)?$/;
+  const params = url.match(paramsPattern);
+  const urlWithoutParams = url.replace(paramsPattern, "");
+
+  const result: Record<string, string> = {};
+  if (params && params[1]) {
+    const paramList = params[1].split("&");
+    for (let i = 0; i < paramList.length; i++) {
+      const idx = paramList[i].indexOf("=");
+      const name = paramList[i].substring(0, idx);
+      const value = paramList[i].substring(idx + 1);
+      result[decodeURIComponent(name)] = decodeURIComponent(value);
+    }
+  }
+  const urlSeg = urlWithoutParams.split("/");
+  const routeSeg = route.split("/");
+  let max = Math.max(urlSeg.length, routeSeg.length);
+  for (let i = 0; i < max; i++) {
+    if (routeSeg[i] && routeSeg[i].charAt(0) === ":") {
+      const param = routeSeg[i].replace(/(^:|[+*?]+$)/g, "");
+
+      const flags = (routeSeg[i].match(/[+*?]+$/) || EMPTY)[0] || "";
+      const plus = ~flags.indexOf("+");
+      const star = ~flags.indexOf("*");
+      const val = urlSeg[i] || "";
+
+      if (!val && !star && (flags.indexOf("?") < 0 || plus)) {
+        return undefined;
+      }
+      result[param] = decodeURIComponent(val);
+      if (plus || star) {
+        result[param] = urlSeg.slice(i).map(decodeURIComponent).join("/");
+        break;
+      }
+    } else if (routeSeg[i] !== urlSeg[i]) {
+      return undefined;
+    }
+  }
+  return result;
+}
+const EMPTY: Record<string, string> = {};
diff --git a/packages/exchange-backoffice-ui/tsconfig.json b/packages/exchange-backoffice-ui/tsconfig.json
index abb9a9f36..cc5bdf396 100644
--- a/packages/exchange-backoffice-ui/tsconfig.json
+++ b/packages/exchange-backoffice-ui/tsconfig.json
@@ -5,7 +5,7 @@
     "module": "ES6",
     "lib": [
       "DOM",
-      "ES2016"
+      "ES2017"
     ],
     "allowJs": true /* Allow javascript files to be compiled. */,
     // "checkJs": true,                       /* Report errors in .js files. */