diff --git a/traque-back/game.js b/traque-back/game.js
index bfd6c59..f8e610f 100644
--- a/traque-back/game.js
+++ b/traque-back/game.js
@@ -1,3 +1,5 @@
+import { isInCircle } from "./map_utils.js";
+
 const GameState = {
     SETUP: "setup",
     PLACEMENT: "placement",
@@ -15,6 +17,10 @@ export default class Game {
         if(Object.values(GameState).indexOf(newState) == -1) {
             return false;
         }
+        //The game has started
+        if(this.state == GameState.PLACEMENT && newState == GameState.PLAYING) {
+            this.initLastSentLocations();
+        }
         this.state = newState;
         return true;
     }
@@ -43,7 +49,8 @@ export default class Game {
             enemyLocation: null,
             captureCode: this.createCaptureCode(),
             sockets: [],
-            startingArea: null
+            startingArea: null,
+            ready: false,
         });
         this.updateTeamChasing();
         return true;
@@ -80,27 +87,30 @@ export default class Game {
                 return t;
             }
         })
-        console.log(this.teams)
         return true;
     }
-    // renameTeam(teamId, newName) {
-    //     let team = this.getTeam(teamId);
-    //     if(team == undefined) {
-    //         return false;
-    //     }
-    //     team.name = newName;
-    //     return true;
-    // }
-
+    
     updateLocation(teamId, location) {
         let team = this.getTeam(teamId);
         if(team == undefined) {
             return false;
         }
         team.currentLocation = location;
+        //Update the team ready status if they are in their starting area
+        if(this.state == GameState.PLACEMENT && team.startingArea && team.startingArea && location) {
+            team.ready = isInCircle(location, [team.startingArea.center.lat, team.startingArea.center.lng], team.startingArea.radius)
+        }
         return true;
     }
 
+    //Make it so that when a team requests the location of a team that has never sent their locaiton
+    //Their position at the begining of the game is sent
+    initLastSentLocations() {
+        for(let team of this.teams) {
+            team.lastSentLocation = team.currentLocation;
+        }
+    }
+
     sendLocation(teamId) {
         let team = this.getTeam(teamId);
         if(team == undefined) {
diff --git a/traque-back/index.js b/traque-back/index.js
index ae73fba..c3165c4 100644
--- a/traque-back/index.js
+++ b/traque-back/index.js
@@ -40,14 +40,20 @@ function secureBroadcast(event, data) {
 }
 
 function teamBroadcast(teamId, event, data) {
-  for(let socketId of game.getTeam(teamId).sockets) {
-    io.of("player").to(socketId).emit(event,data)
+  for (let socketId of game.getTeam(teamId).sockets) {
+    io.of("player").to(socketId).emit(event, data)
   }
 }
 
-function playersBroadcast(event,data) {
-  for(let team of game.teams) {
-    teamBroadcast(team.id,event,data);
+function playersBroadcast(event, data) {
+  for (let team of game.teams) {
+    teamBroadcast(team.id, event, data);
+  }
+}
+
+function logoutPlayer(id) {
+  for (let team of game.teams) {
+    team.sockets = team.sockets.filter((sid) => sid != id);
   }
 }
 
@@ -70,6 +76,10 @@ io.of("admin").on("connection", (socket) => {
     loggedInSockets = loggedInSockets.filter(s => s !== socket.id);
   });
 
+  socket.on("logout", () => {
+    loggedInSockets = loggedInSockets.filter(s => s !== socket.id);
+  })
+
   //User is attempting to log in
   socket.on("login", (password) => {
     if (password === ADMIN_PASSWORD && !loggedIn) {
@@ -87,40 +97,40 @@ io.of("admin").on("connection", (socket) => {
 
   //User is attempting to add a new team
   socket.on("add_team", (teamName) => {
-    if(!loggedIn) {
+    if (!loggedIn) {
       socket.emit("error", "Not logged in");
       return;
     }
-    if(game.addTeam(teamName)) {
+    if (game.addTeam(teamName)) {
       secureBroadcast("teams", game.teams);
-    }else {
+    } else {
       socket.emit("error", "Error adding team");
     }
   });
 
   //User is attempting to remove a team
   socket.on("remove_team", (teamId) => {
-    if(!loggedIn) {
+    if (!loggedIn) {
       socket.emit("error", "Not logged in");
       return;
     }
-    if(game.removeTeam(teamId)) {
+    if (game.removeTeam(teamId)) {
       secureBroadcast("teams", game.teams);
-    }else {
+    } else {
       socket.emit("error", "Error removing team");
     }
   });
 
   //User is attempting to change the game state
   socket.on("change_state", (state) => {
-    if(!loggedIn) {
+    if (!loggedIn) {
       socket.emit("error", "Not logged in");
       return;
     }
-    if(game.setState(state)) {
+    if (game.setState(state)) {
       secureBroadcast("game_state", game.state);
       playersBroadcast("game_state", game.state)
-    }else {
+    } else {
       socket.emit("error", "Error setting state");
     }
   });
@@ -129,11 +139,11 @@ io.of("admin").on("connection", (socket) => {
   //Note that we never check if the new order contains the same teams as the old order, so it behaves more like a setTeams function
   //But the frontend should always send the same teams in a different order
   socket.on("reorder_teams", (newOrder) => {
-    if(!loggedIn) {
+    if (!loggedIn) {
       socket.emit("error", "Not logged in");
       return;
     }
-    if(game.reorderTeams(newOrder)) {
+    if (game.reorderTeams(newOrder)) {
       secureBroadcast("teams", game.teams);
     } else {
       socket.emit("error", "Error reordering teams");
@@ -141,11 +151,11 @@ io.of("admin").on("connection", (socket) => {
   });
 
   socket.on("update_team", (teamId, newTeam) => {
-    if(!loggedIn) {
+    if (!loggedIn) {
       socket.emit("error", "Not logged in");
       return;
     }
-    if(game.updateTeam(teamId, newTeam)) {
+    if (game.updateTeam(teamId, newTeam)) {
       secureBroadcast("teams", game.teams);
       sendUpdatedTeamInformations(teamId)
     }
@@ -154,11 +164,11 @@ io.of("admin").on("connection", (socket) => {
   //Request an update of the team list
   //We only reply to the sender to prevent spam
   socket.on("get_teams", () => {
-    if(!loggedIn) {
+    if (!loggedIn) {
       socket.emit("error", "Not logged in");
       return;
     }
-      socket.emit("teams", game.teams);
+    socket.emit("teams", game.teams);
   });
 
 });
@@ -173,7 +183,8 @@ function sendUpdatedTeamInformations(teamId) {
       currentLocation: team.currentLocation,
       lastSentLocation: team.lastSentLocation,
       captureCode: team.captureCode,
-      startingArea: team.startingArea
+      startingArea: team.startingArea,
+      ready: team.ready
     })
   })
 }
@@ -184,46 +195,50 @@ io.of("player").on("connection", (socket) => {
 
   socket.on("disconnect", () => {
     console.log("user disconnected");
-    if(teamId !== null && game.getTeam(teamId) !== undefined){
-      game.getTeam(teamId).sockets = game.getTeam(teamId).sockets.filter(s => s !== socket.id);
-    }
+    logoutPlayer(socket.id)
   });
 
   socket.on("login", (loginTeamId) => {
-    if(game.getTeam(loginTeamId) === undefined) {
+    if (game.getTeam(loginTeamId) === undefined) {
       socket.emit("login_response", false);
       return;
     }
+    logoutPlayer(socket.id)
     teamId = loginTeamId;
     let team = game.getTeam(loginTeamId);
     team.sockets.push(socket.id);
-    socket.emit("login_response", true);
     sendUpdatedTeamInformations(loginTeamId);
+    socket.emit("login_response", true);
     socket.emit("game_state", game.state)
   });
 
+  socket.on("logout", () => {
+    logoutPlayer(socket.id);
+  })
+
   socket.on("update_position", (position) => {
     // Only the first player to connect to the team socket can update the current position
     // This is done to prevent multiple clients from sending slightly different prosition back and forth
     // Making the point jitter on the map
-    if(!teamId) {
+    if (!teamId) {
       socket.emit("error", "not logged in yet");
       return;
     }
-    if(game.getTeam(teamId).sockets.indexOf(socket.id) == 0) {
+    let team = game.getTeam(teamId)
+    if (team.sockets.indexOf(socket.id) == 0) {
       game.updateLocation(teamId, position);
-      teamBroadcast(teamId, "update_team", {currentLocation: position});
+      teamBroadcast(teamId, "update_team", { currentLocation: team.currentLocation, ready: team.ready });
     }
   });
-  
+
   socket.on("send_position", () => {
     game.sendLocation(teamId);
     let team = game.getTeam(teamId);
-    if(team === undefined) {
+    if (team === undefined) {
       socket.emit("error", "Team not found");
       return;
     }
     game.updateTeamChasing();
-    teamBroadcast(teamId, "update_team", {enemyLocation: team.enemyLocation});
+    teamBroadcast(teamId, "update_team", { enemyLocation: team.enemyLocation });
   });
 });
diff --git a/traque-back/map_utils.js b/traque-back/map_utils.js
new file mode 100644
index 0000000..646cfb3
--- /dev/null
+++ b/traque-back/map_utils.js
@@ -0,0 +1,21 @@
+function getDistanceFromLatLon([lat1, lon1], [lat2, lon2]) {
+  var R = 6371; // Radius of the earth in km
+  var dLat = deg2rad(lat2-lat1);  // deg2rad below
+  var dLon = deg2rad(lon2-lon1); 
+  var a = 
+    Math.sin(dLat/2) * Math.sin(dLat/2) +
+    Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * 
+    Math.sin(dLon/2) * Math.sin(dLon/2)
+    ; 
+  var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); 
+  var d = R * c; // Distance in km
+  return d * 1000;
+}
+
+function deg2rad(deg) {
+  return deg * (Math.PI/180)
+}
+
+export function isInCircle(position, center, radius) {
+    return getDistanceFromLatLon(position, center) < radius;
+}
\ No newline at end of file