diff --git a/client/src/components/ConferencePage/ConferencePage.tsx b/client/src/components/ConferencePage/ConferencePage.tsx
index 8bc2a02..0a6553f 100644
--- a/client/src/components/ConferencePage/ConferencePage.tsx
+++ b/client/src/components/ConferencePage/ConferencePage.tsx
@@ -13,22 +13,23 @@ const StatusThumbsUp = 'thumbs-up';
 const StatusThumbsDown = 'thumbs-down';
 const StatusNoVote = 'no-vote';
 
+const HeartbeatInterval = 5000;
+
 export const ConferencePage:FunctionComponent<ConferencePageProps> = () => {
   const { user } = useUserProfile();
-  const { id, data, peers, setNickname, setEmail, ping, setStatus } = useConference();
+  const { uuid, data, setNickname, setEmail, ping, setStatus, forget } = useConference();
 
-  const currentStatus = data.statuses[id];
+  const currentStatus = data.statuses[uuid];
 
   useEffect(() => {
-    if (peers.length === 0) return;
-    if (!id || (!user.name && !user.email)) return;
+    if (!user.name && !user.email) return;
     setNickname(user.name || user.email.split('@')[0]);
     setEmail(user.email);
-  }, [user.name, user.email, peers.length]);
+  }, [user.name, user.email]);
 
   useEffect(() => {
     ping();
-    const intervalId = setInterval(() => ping(), 30000);
+    const intervalId = setInterval(() => ping(), HeartbeatInterval);
     return () => clearInterval(intervalId);
   }, []);
 
@@ -78,11 +79,21 @@ export const ConferencePage:FunctionComponent<ConferencePageProps> = () => {
           <h3 className="is-size-3">Assemblée</h3>
           <div className="columns mt-1">
             <UserCard className="column is-narrow" 
-              nickname={data.nicknames[id]}
+              nickname={data.nicknames[uuid]}
               status={currentStatus}
               email={user.email} />
             {
-              peers.map(p => {
+              Object.keys(data.peers).map(p => {
+                const now = new Date();
+                const lastHeartBeat = new Date(data.peers[p]);
+
+                if (p === uuid) return null;
+
+                if (now.getTime() > lastHeartBeat.getTime() + HeartbeatInterval) {
+                  forget(p);
+                  return null;
+                }
+
                 const nickname = data.nicknames[p] || '???';
                 const email = data.emails[p] || '';
                 return (
diff --git a/client/src/hooks/useConference.tsx b/client/src/hooks/useConference.tsx
index 0c94e5b..6295524 100644
--- a/client/src/hooks/useConference.tsx
+++ b/client/src/hooks/useConference.tsx
@@ -1,19 +1,21 @@
 import * as Y from 'yjs'
 import { WebrtcProvider,  } from 'y-webrtc'
 import { useEffect, useRef, useState } from 'react'
+import { uuidV4 } from '../util/uuid';
+
+const uuid = uuidV4();
 
 export function  useConference() {
   const docRef = useRef(new Y.Doc());
   
   const [ state, setState ] = useState({
     data: {
-      heartbeats: {},
       emails: {},
       nicknames: {},
       statuses: {},
+      peers: {},
     },
-    peers: [],
-    id: null,
+    uuid,
   });
 
   const setData = (key: string, value: any) => {
@@ -25,17 +27,8 @@ export function  useConference() {
     const roomName = `${window.location.protocol}//${window.location.host}/daddy/conference`;
     const provider = new WebrtcProvider(roomName, docRef.current);
 
-    const onPeers = (evt) => {
-      let peers = [...state.peers];
-      peers = peers.filter(p => evt.removed.indexOf(p) === -1);
-      peers.push(...evt.added);
-      setState(state => ({ ...state, id: provider.room.peerId, peers }));
-    };
-
-    provider.on('peers', onPeers);
-
-    const heartbeats = doc.getMap('heartbeats');
-    heartbeats.observe(evt => setData('heartbeats', evt.currentTarget.toJSON()));
+    const peers = doc.getMap('peers');
+    peers.observe(evt => setData('peers', evt.currentTarget.toJSON()));
 
     const nicknames = doc.getMap('nicknames');
     nicknames.observe(evt => setData('nicknames', evt.currentTarget.toJSON()));
@@ -47,7 +40,6 @@ export function  useConference() {
     statuses.observe(evt => setData('statuses', evt.currentTarget.toJSON()));
     
     return () => {
-      provider.off('peers', onPeers);
       provider.destroy();
       docRef.current.destroy();
     };
@@ -55,31 +47,38 @@ export function  useConference() {
   
   return {
     data: state.data,
-    peers: state.peers,
-    id: state.id,
+    uuid: state.uuid,
 
     setStatus: (status: string) => {
       const doc = docRef.current;
       const statuses = doc.getMap('statuses');
-      statuses.set(state.id, status);
+      statuses.set(state.uuid, status);
     },
 
     ping: () => {
       const doc = docRef.current;
-      const heartbeats = doc.getMap('heartbeats');
-      heartbeats.set(state.id, (new Date()).toJSON());
+      const peers = doc.getMap('peers');
+      peers.set(state.uuid, (new Date()).toJSON());
     },
 
     setNickname: (nickname: string) => {
+      console.log('setNickname', nickname);
       const doc = docRef.current;
       const nicknames = doc.getMap('nicknames');
-      nicknames.set(state.id, nickname);
+      nicknames.set(state.uuid, nickname);
     },
 
     setEmail: (email: string) => {
+      console.log('setEmail', email);
       const doc = docRef.current;
       const emails = doc.getMap('emails');
-      emails.set(state.id, email);
+      emails.set(state.uuid, email);
+    },
+
+    forget: (uuid: string) => {
+      const doc = docRef.current;
+      const peers = doc.getMap('peers');
+      peers.delete(uuid);
     },
   };
 }
\ No newline at end of file