diff --git a/src/components/gpx-dialog/GpxDialog.tsx b/src/components/gpx-dialog/GpxDialog.tsx
index 3b530dd..66a8e03 100644
--- a/src/components/gpx-dialog/GpxDialog.tsx
+++ b/src/components/gpx-dialog/GpxDialog.tsx
@@ -1,6 +1,6 @@
 import { useI18n } from '@solid-primitives/i18n';
 import { Box, Button, IconButton, SvgIcon, TextField } from '@suid/material';
-import { cloneDeep } from 'lodash';
+import { cloneDeep, isPlainObject } from 'lodash';
 import { Component, createSignal, Show } from 'solid-js';
 import { newEmptyGpx } from '../../db/gpx';
 import { peekCachedSignal } from '../../workers/cached-signals';
@@ -93,6 +93,20 @@ const GpxDialog: Component<{}> = (props) => {
       gpx: gpx(),
     });
   };
+  const gpxSharedChangeHandler = (event: any) => {
+    const newGpx: Gpx = cloneDeep(gpx()) as Gpx;
+    if (!isPlainObject(newGpx.extensions)) {
+      newGpx.extensions = {};
+    }
+    newGpx.extensions.shared = event.target.value;
+    setGpx(newGpx);
+    console.log({
+      caller: 'GpxDialog / gpxSharedChangeHandler',
+      value: event.target.value,
+      gpx: gpx(),
+      newGpx,
+    });
+  };
   const gpxTimeChangeHandler = (event: any) => {
     const newGpx: Gpx = cloneDeep(gpx()) as Gpx;
     if (newGpx.metadata === undefined) {
@@ -164,6 +178,14 @@ const GpxDialog: Component<{}> = (props) => {
               onChange={gpxDescChangeHandler}
               InputProps={{ inputComponent: 'textarea' }}
             />
+            <TextField
+              label={t('gpxShared')}
+              multiline={true}
+              rows={5}
+              value={gpx()?.extensions?.shared || ''}
+              onChange={gpxSharedChangeHandler}
+              InputProps={{ inputComponent: 'textarea' }}
+            />
             <Button variant='contained' onClick={saveHandler}>
               {t('gpxSave')}
             </Button>
diff --git a/src/db/change-handler.ts b/src/db/change-handler.ts
index b17a682..b804783 100644
--- a/src/db/change-handler.ts
+++ b/src/db/change-handler.ts
@@ -43,7 +43,7 @@ for (const property in methods) {
 }
 
 const changeHandler = async (change: any) => {
-  //  console.log({ caller: 'ChangeHandler', change, watches: globalThis.watches });
+  // console.log({ caller: 'ChangeHandler', change, watches: globalThis.watches });
   const { id } = change;
   if (!globalThis.watches) {
     globalThis.watches = new Map();
diff --git a/src/db/gpx.ts b/src/db/gpx.ts
index ebe674f..36ac110 100644
--- a/src/db/gpx.ts
+++ b/src/db/gpx.ts
@@ -1,3 +1,4 @@
+import { Rowing } from '@suid/icons-material';
 import { cloneDeep, isEmpty } from 'lodash';
 import { PureComponent } from 'react';
 import { $DEVCOMP } from 'solid-js';
@@ -423,9 +424,20 @@ export const getGpx = async (params: any) => {
     }
     //level 1 (extensions)
     if (target !== undefined && row.doc.type === 'extensions') {
-      target.splice(1);
-      appendToArray(target.at(-1), row.doc.type, row.doc.doc);
-      target.push(row.doc.doc);
+      console.log({
+        caller: 'getGpx / extensions',
+        gpx,
+        row,
+        doc: row.doc.doc,
+        gpx_extensions: gpx?.extensions,
+        target,
+      });
+
+      gpx.extensions = row.doc.doc;
+
+      // target.splice(1);
+      // appendToArray(target.at(-1), row.doc.type, row.doc.doc);
+      // target.push(row.doc.doc);
     }
     //level 1 (others)
     if (
@@ -477,7 +489,10 @@ export const putGpx = async (params: any) => {
       gpx: intToGpxId(date.valueOf()),
     });
   }
-  console.log({ caller: 'putGpx', params, id, gpx });
+
+  const previousShared = (await get(`${id}/4extensions`)).doc?.shared;
+
+  console.log({ caller: 'putGpx', params, id, gpx, previousShared });
   const extensions = gpx?.extensions;
 
   gpx.extensions = undefined;
@@ -494,5 +509,24 @@ export const putGpx = async (params: any) => {
       extensions
     );
   }
+
+  if (previousShared !== extensions?.shared) {
+    const shared = extensions?.shared.split(/\s*,\s*/);
+    const family = (await getFamily(id, { include_docs: true })).rows.map(
+      (row: any) => {
+        return { ...row.doc, shared };
+      }
+    );
+    console.log({
+      caller: 'putGpx / updateShared',
+      params,
+      id,
+      gpx,
+      previousShared,
+      family,
+    });
+    await db.bulkDocs(family);
+  }
+
   return id;
 };
diff --git a/src/db/types.d.ts b/src/db/types.d.ts
index 0c5e565..7e47127 100644
--- a/src/db/types.d.ts
+++ b/src/db/types.d.ts
@@ -49,7 +49,8 @@ interface Extensions {
   'dyo:batterylevel'?: number;
   'dyo:useragent'?: string;
   'dyo:minZoom'?: number;
-  address: any;
+  address?: any;
+  shared?: string;
 }
 
 interface Trk {
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index b218790..1ad9749 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -44,6 +44,7 @@ const dict = {
   gpxNoName: 'No name',
   gpxDesc: 'Description',
   gpxTime: 'Start date',
+  gpxShared: 'Shared with',
   gpxSave: 'Save',
   newGpx: '-- new journey --',
 
diff --git a/src/i18n/fr.ts b/src/i18n/fr.ts
index 42e89ff..5d2a1e9 100644
--- a/src/i18n/fr.ts
+++ b/src/i18n/fr.ts
@@ -49,6 +49,7 @@ const dict = {
   gpxNoName: 'Pas de nom',
   gpxDesc: 'Description',
   gpxTime: 'Date de début',
+  gpxShared: 'Partagé avec',
   gpxSave: 'Sauvegarder',
   newGpx: '-- nouveau voyage --',