diff --git a/lib/db/api.js b/lib/db/api.js
index bf3f9a94..2b3548df 100644
--- a/lib/db/api.js
+++ b/lib/db/api.js
@@ -41,26 +41,36 @@ dbapi.saveDeviceLog = function(serial, entry) {
   }))
 }
 
-dbapi.saveDeviceStatus = function(serial, status) {
-  return db.run(r.table('devices').get(serial).update({
-      status: status.status
-    , provider: status.provider
+dbapi.saveDevice = function(serial, device) {
+  return db.run(r.table('devices').insert({
+      serial: serial
+    , present: true
+    , provider: device.provider
+    , status: device.status
     , statusChangedAt: r.now()
+    , createdAt: r.now()
+    }
+  , {
+      upsert: true
     }))
-    .then(function(stats) {
-      if (stats.skipped) {
-        return db.run(r.table('devices').insert({
-          serial: serial
-        , provider: status.provider
-        , status: status.status
-        , statusChangedAt: r.now()
-        , createdAt: r.now()
-        }))
-      }
-      return stats
+}
+
+dbapi.saveDeviceStatus = function(serial, status) {
+  return dbapi.ensureDeviceSaved(serial)
+    .then(function() {
+      return db.run(r.table('devices').get(serial).update({
+        status: status
+      , statusChangedAt: r.now()
+      }))
     })
 }
 
+dbapi.setDeviceAbsent = function(serial) {
+  return db.run(r.table('devices').get(serial).update({
+    present: false
+  }))
+}
+
 dbapi.saveDeviceIdentity = function(serial, identity) {
   return db.run(r.table('devices').get(serial).update({
     platform: identity.platform
diff --git a/lib/roles/app.js b/lib/roles/app.js
index 781a1a1f..dc866dfd 100644
--- a/lib/roles/app.js
+++ b/lib/roles/app.js
@@ -178,6 +178,15 @@ module.exports = function(options) {
       .on(wire.LeaveGroupMessage, function(channel, message) {
         socket.emit('group.leave', message)
       })
+      .on(wire.DevicePresentMessage, function(channel, message) {
+        socket.emit('device.present', message)
+      })
+      .on(wire.DeviceAbsentMessage, function(channel, message) {
+        socket.emit('device.absent', message)
+      })
+      .on(wire.DeviceStatusMessage, function(channel, message) {
+        socket.emit('device.status', message)
+      })
       .handler()
 
     // Global messages
diff --git a/lib/roles/device.js b/lib/roles/device.js
index 132b2d69..b58a4736 100644
--- a/lib/roles/device.js
+++ b/lib/roles/device.js
@@ -432,8 +432,14 @@ module.exports = function(options) {
   }
 
   function gracefullyExit() {
-    log.info('Bye')
-    process.exit(0)
+    if (isGrouped()) {
+      leaveGroup()
+      Promise.delay(500).then(gracefullyExit)
+    }
+    else {
+      log.info('Bye')
+      process.exit(0)
+    }
   }
 
   process.on('SIGINT', function() {
diff --git a/lib/roles/processor.js b/lib/roles/processor.js
index 00f34ee4..ed0e6753 100644
--- a/lib/roles/processor.js
+++ b/lib/roles/processor.js
@@ -32,6 +32,18 @@ module.exports = function(options) {
   })
 
   devDealer.on('message', wirerouter()
+    .on(wire.DevicePresentMessage, function(channel, message, data) {
+      dbapi.saveDevice(message.serial, message)
+      appDealer.send([channel, data])
+    })
+    .on(wire.DeviceAbsentMessage, function(channel, message, data) {
+      dbapi.setDeviceAbsent(message.serial)
+      appDealer.send([channel, data])
+    })
+    .on(wire.DeviceStatusMessage, function(channel, message, data) {
+      dbapi.saveDeviceStatus(message.serial, message.status)
+      appDealer.send([channel, data])
+    })
     .on(wire.JoinGroupMessage, function(channel, message, data) {
       appDealer.send([channel, data])
     })
@@ -51,9 +63,6 @@ module.exports = function(options) {
     .on(wire.DeviceIdentityMessage, function(channel, message) {
       dbapi.saveDeviceIdentity(message.serial, message)
     })
-    .on(wire.DeviceStatusMessage, function(channel, message) {
-      dbapi.saveDeviceStatus(message.serial, message)
-    })
     .on(wire.ShellCommandDataMessage, function(channel, message, data) {
       appDealer.send([channel, data])
     })
diff --git a/lib/roles/provider.js b/lib/roles/provider.js
index 2c8fccb8..e6335286 100644
--- a/lib/roles/provider.js
+++ b/lib/roles/provider.js
@@ -60,18 +60,36 @@ module.exports = function(options) {
 
   tracker.on('add', function(device) {
     lists.all.push(device.id)
-    pushDeviceStatus(device, device.type)
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.DevicePresentMessage(
+        device.id
+      , options.name
+      , wireutil.toDeviceStatus(device.type)
+      ))
+    ])
     maybeConnect(device)
   })
 
   tracker.on('change', function(device) {
-    pushDeviceStatus(device, device.type)
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.DeviceStatusMessage(
+        device.id
+      , wireutil.toDeviceStatus(device.type)
+      ))
+    ])
     maybeConnect(device) || maybeDisconnect(device)
   })
 
   tracker.on('remove', function(device) {
     _.pull(lists.all, device.id)
-    pushDeviceStatus(device, 'absent')
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.DeviceAbsentMessage(
+        device.id
+      ))
+    ])
     maybeDisconnect(device)
   })
 
@@ -321,6 +339,12 @@ module.exports = function(options) {
     Array.prototype.push.apply(options.ports, worker.ports)
     _.pull(lists.ready, id)
     _.pull(lists.waiting, id)
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.DeviceAbsentMessage(
+        id
+      ))
+    ])
     delayedTotals()
     return worker
   }
diff --git a/lib/wire/util.js b/lib/wire/util.js
index c64d6eb8..a31ddf1e 100644
--- a/lib/wire/util.js
+++ b/lib/wire/util.js
@@ -14,7 +14,6 @@ var wireutil = {
     , emulator: 'ONLINE'
     , unauthorized: 'UNAUTHORIZED'
     , offline: 'OFFLINE'
-    , absent: 'ABSENT'
     }[type]]
   }
 , envelope: function(message) {
@@ -106,13 +105,6 @@ var wireutil = {
       })
     ))
   }
-, makeDeviceStatusMessage: function(serial, type, provider) {
-    return wireutil.envelope(new wire.DeviceStatusMessage(
-      serial
-    , wireutil.toDeviceStatus(type)
-    , provider
-    ))
-  }
 , makeProbeMessage: function() {
     return wireutil.envelope(new wire.ProbeMessage())
   }
diff --git a/lib/wire/wire.proto b/lib/wire/wire.proto
index 8b430a89..f58036dd 100644
--- a/lib/wire/wire.proto
+++ b/lib/wire/wire.proto
@@ -15,6 +15,8 @@ enum MessageType {
   ShellCommandFailMessage = 12;
   DeviceIdentityMessage   = 13;
   DeviceLogMessage        = 14;
+  DevicePresentMessage    = 16;
+  DeviceAbsentMessage     = 17;
 }
 
 message Envelope {
@@ -36,6 +38,16 @@ message DeviceLogMessage {
 
 // Introductions
 
+message DevicePresentMessage {
+  required string serial = 1;
+  required string provider = 2;
+  required DeviceStatus status = 4;
+}
+
+message DeviceAbsentMessage {
+  required string serial = 1;
+}
+
 message DevicePokeMessage {
   required string serial = 1;
   required string channel = 2;
@@ -45,16 +57,14 @@ message ProbeMessage {
 }
 
 enum DeviceStatus {
-  ABSENT = 1;
-  OFFLINE = 2;
-  UNAUTHORIZED = 3;
-  ONLINE = 4;
+  OFFLINE = 1;
+  UNAUTHORIZED = 2;
+  ONLINE = 3;
 }
 
 message DeviceStatusMessage {
   required string serial = 1;
   required DeviceStatus status = 2;
-  required string provider = 3;
 }
 
 message DeviceDisplayMessage {
diff --git a/res/app/scripts/services/deviceService.js b/res/app/scripts/services/deviceService.js
index 308655c1..3fd0c2df 100644
--- a/res/app/scripts/services/deviceService.js
+++ b/res/app/scripts/services/deviceService.js
@@ -1,13 +1,56 @@
 define(['./module', 'oboe'], function(mod, oboe) {
-  function DevicesServiceFactory($rootScope, socketService) {
+  function DevicesServiceFactory($rootScope, socket) {
     var deviceService = {
       devices: []
+    , devicesBySerial: {}
     }
 
+    function get(data) {
+      return deviceService.devices[deviceService.devicesBySerial[data.serial]]
+    }
+
+    function insert(data, alter) {
+      deviceService.devicesBySerial[data.serial] =
+        deviceService.devices.push(data) - 1
+      _.assign(data, alter)
+      $rootScope.$digest()
+    }
+
+    function modify(data, properties) {
+      if (data) {
+        _.assign(data, properties)
+        $rootScope.$digest()
+      }
+    }
+
+    function remove(data) {
+      var index = deviceService.devicesBySerial[data.serial]
+      if (index >= 0) {
+        deviceService.devices.splice(index, 1)
+        delete deviceService.devicesBySerial[data.serial]
+        $rootScope.$digest()
+      }
+    }
+
+    socket.on('device.present', function(data) {
+      remove(data)
+      insert(data, {
+        present: true
+      })
+    })
+
+    socket.on('device.status', function(data) {
+      modify(get(data), data)
+    })
+
+    socket.on('device.absent', function(data) {
+      remove(data)
+    })
+
     oboe('/api/v1/devices')
       .node('devices[*]', function(device) {
-        deviceService.devices.push(device)
-        $rootScope.$digest()
+        // We want to skip other arguments
+        insert(device)
       })
 
     return deviceService
diff --git a/res/app/scripts/services/groupService.js b/res/app/scripts/services/groupService.js
index 6d07e7f8..46491d2e 100644
--- a/res/app/scripts/services/groupService.js
+++ b/res/app/scripts/services/groupService.js
@@ -16,6 +16,11 @@ define(['./module', 'lodash'], function(mod, _) {
       $rootScope.$digest()
     })
 
+    socket.on('device.absent', function(data) {
+      _.pull(groupService.members, data.serial)
+      $rootScope.$digest()
+    })
+
     groupService.invite = function(requirements) {
       socket.emit('group.invite', requirements)
     }