diff --git a/lib/db/api.js b/lib/db/api.js
index 2b3548df..f9a17b2b 100644
--- a/lib/db/api.js
+++ b/lib/db/api.js
@@ -46,6 +46,7 @@ dbapi.saveDevice = function(serial, device) {
       serial: serial
     , present: true
     , provider: device.provider
+    , owner: null
     , status: device.status
     , statusChangedAt: r.now()
     , createdAt: r.now()
@@ -65,6 +66,18 @@ dbapi.saveDeviceStatus = function(serial, status) {
     })
 }
 
+dbapi.setDeviceOwner = function(serial, owner) {
+  return db.run(r.table('devices').get(serial).update({
+    owner: owner
+  }))
+}
+
+dbapi.unsetDeviceOwner = function(serial, owner) {
+  return db.run(r.table('devices').get(serial).update({
+    owner: null
+  }))
+}
+
 dbapi.setDeviceAbsent = function(serial) {
   return db.run(r.table('devices').get(serial).update({
     present: false
diff --git a/lib/roles/app.js b/lib/roles/app.js
index 6386c9d8..0d261e57 100644
--- a/lib/roles/app.js
+++ b/lib/roles/app.js
@@ -169,7 +169,7 @@ module.exports = function(options) {
 
   io.on('connection', function(socket) {
     var channels = []
-      , group = socket.handshake.user.group
+      , user = socket.handshake.user
 
     var messageListener = wirerouter()
       .on(wire.JoinGroupMessage, function(channel, message) {
@@ -200,9 +200,9 @@ module.exports = function(options) {
     groupRouter.on(wireutil.global, messageListener)
 
     // User's private group
-    channels.push(group)
-    sub.subscribe(group)
-    groupRouter.on(group, messageListener)
+    channels.push(user.group)
+    sub.subscribe(user.group)
+    groupRouter.on(user.group, messageListener)
 
     // Clean up all listeners and subscriptions
     socket.on('disconnect', function() {
@@ -214,24 +214,33 @@ module.exports = function(options) {
     })
 
     socket.on('group.invite', function(data) {
-      push.send([wireutil.global, wireutil.makeGroupMessage(
-        group
-      , options.groupTimeout
-      , data
-      )])
+      push.send([
+        wireutil.global
+      , wireutil.envelope(new wire.GroupMessage(
+          new wire.OwnerMessage(
+            user.email
+          , user.name
+          , user.group
+          )
+        , options.groupTimeout
+        , wireutil.toDeviceRequirements(data)
+        ))
+      ])
     })
 
     socket.on('group.kick', function(data) {
-      push.send([group, wireutil.makeUngroupMessage(
-        group
-      , data
-      )])
+      push.send([
+        user.group
+      , wireutil.envelope(new wire.UngroupMessage(
+          wireutil.toDeviceRequirements(data)
+        ))
+      ])
     })
 
     function touchSender(klass) {
       return function(data) {
         push.send([
-          group
+          user.group
         , wireutil.envelope(new klass(
             data.x
           , data.y
@@ -243,7 +252,7 @@ module.exports = function(options) {
     function keySender(klass) {
       return function(data) {
         push.send([
-          group
+          user.group
         , wireutil.envelope(new klass(
             data.key
           ))
diff --git a/lib/roles/device.js b/lib/roles/device.js
index 42b686a1..e7a6d7f1 100644
--- a/lib/roles/device.js
+++ b/lib/roles/device.js
@@ -25,8 +25,8 @@ module.exports = function(options) {
     , identity = Object.create(null)
     , display = Object.create(null)
     , vendor = Object.create(null)
+    , owner = null
     , solo = wireutil.makePrivateChannel()
-    , group = null
     , channels = new ChannelManager()
     , vitals = new Vitals()
     , ports = {
@@ -83,7 +83,7 @@ module.exports = function(options) {
   // Unsubscribe from temporary channels when they timeout
   channels.on('timeout', function(channel) {
     log.info('Channel "%s" timed out', channel)
-    if (channel === group) {
+    if (channel === owner.group) {
       leaveGroup()
     }
   })
@@ -342,7 +342,7 @@ module.exports = function(options) {
     .on(wire.GroupMessage, function(channel, message) {
       if (!isGrouped() &&
           devutil.matchesRequirements(identity, message.requirements)) {
-        joinGroup(message.channel, message.timeout)
+        joinGroup(message.owner, message.timeout)
       }
       channels.keepalive(channel)
     })
@@ -436,23 +436,37 @@ module.exports = function(options) {
   }
 
   function isGrouped() {
-    return !!group
+    return !!owner
   }
 
-  function joinGroup(channel, timeout) {
-    log.info('Subscribing to group channel "%s"', channel)
-    channels.register(channel, timeout)
-    sub.subscribe(channel)
-    push.send([channel, wireutil.makeJoinGroupMessage(options.serial)])
-    group = channel
+  function joinGroup(newOwner, timeout) {
+    log.info('Now owned by "%s"', newOwner.email)
+    log.info('Subscribing to group channel "%s"', newOwner.group)
+    channels.register(newOwner.group, timeout)
+    sub.subscribe(newOwner.group)
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.JoinGroupMessage(
+        options.serial
+      , newOwner
+      ))
+    ])
+    owner = newOwner
   }
 
   function leaveGroup() {
-    log.info('Unsubscribing from group channel "%s"', group)
-    channels.unregister(group)
-    sub.unsubscribe(group)
-    push.send([group, wireutil.makeLeaveGroupMessage(options.serial)])
-    group = null
+    log.info('No longer owned by "%s"', owner.email)
+    log.info('Unsubscribing from group channel "%s"', owner.group)
+    channels.unregister(owner.group)
+    sub.unsubscribe(owner.group)
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.LeaveGroupMessage(
+        options.serial
+      , owner
+      ))
+    ])
+    owner = null
   }
 
   function selfDestruct() {
diff --git a/lib/roles/processor.js b/lib/roles/processor.js
index aa604fd6..f13a9eeb 100644
--- a/lib/roles/processor.js
+++ b/lib/roles/processor.js
@@ -45,9 +45,11 @@ module.exports = function(options) {
       appDealer.send([channel, data])
     })
     .on(wire.JoinGroupMessage, function(channel, message, data) {
+      dbapi.setDeviceOwner(message.serial, message.owner)
       appDealer.send([channel, data])
     })
     .on(wire.LeaveGroupMessage, function(channel, message, data) {
+      dbapi.unsetDeviceOwner(message.serial, message.owner)
       appDealer.send([channel, data])
     })
     .on(wire.DeviceLogMessage, function(channel, message, data) {
diff --git a/lib/wire/util.js b/lib/wire/util.js
index a31ddf1e..9e683ddc 100644
--- a/lib/wire/util.js
+++ b/lib/wire/util.js
@@ -16,6 +16,16 @@ var wireutil = {
     , offline: 'OFFLINE'
     }[type]]
   }
+, toDeviceRequirements: function(requirements) {
+    return Object.keys(requirements).map(function(name) {
+      var item = requirements[name]
+      return new wire.DeviceRequirement(
+        name
+      , item.value
+      , wire.RequirementType[item.match.toUpperCase()]
+      )
+    })
+  }
 , envelope: function(message) {
     return new wire.Envelope(message.$code, message.encode()).encodeNB()
   }
@@ -30,43 +40,6 @@ var wireutil = {
     , entry.identifier
     ))
   }
-, makeGroupMessage: function(channel, timeout, requirements) {
-    return wireutil.envelope(new wire.GroupMessage(
-      channel
-    , timeout
-    , Object.keys(requirements).map(function(name) {
-        var item = requirements[name]
-        return new wire.DeviceRequirement(
-          name
-        , item.value
-        , wire.RequirementType[item.match.toUpperCase()]
-        )
-      })
-    ))
-  }
-, makeUngroupMessage: function(channel, requirements) {
-    return wireutil.envelope(new wire.UngroupMessage(
-      channel
-    , Object.keys(requirements).map(function(name) {
-        var item = requirements[name]
-        return new wire.DeviceRequirement(
-          name
-        , item.value
-        , wire.RequirementType[item.match.toUpperCase()]
-        )
-      })
-    ))
-  }
-, makeJoinGroupMessage: function(serial) {
-    return wireutil.envelope(new wire.JoinGroupMessage(
-      serial
-    ))
-  }
-, makeLeaveGroupMessage: function(serial) {
-    return wireutil.envelope(new wire.LeaveGroupMessage(
-      serial
-    ))
-  }
 , makeDevicePokeMessage: function(serial, channel) {
     return wireutil.envelope(new wire.DevicePokeMessage(
       serial
diff --git a/lib/wire/wire.proto b/lib/wire/wire.proto
index bf656bb0..04f70375 100644
--- a/lib/wire/wire.proto
+++ b/lib/wire/wire.proto
@@ -124,23 +124,30 @@ message DeviceRequirement {
   required RequirementType type = 3;
 }
 
+message OwnerMessage {
+  required string email = 1;
+  required string name = 2;
+  required string group = 3;
+}
+
 message GroupMessage {
-  required string channel = 1;
+  required OwnerMessage owner = 1;
   required uint32 timeout = 2;
   repeated DeviceRequirement requirements = 3;
 }
 
 message UngroupMessage {
-  required string channel = 1;
   repeated DeviceRequirement requirements = 2;
 }
 
 message JoinGroupMessage {
   required string serial = 1;
+  required OwnerMessage owner = 2;
 }
 
 message LeaveGroupMessage {
   required string serial = 1;
+  required OwnerMessage owner = 2;
 }
 
 // Input
diff --git a/res/app/scripts/services/deviceService.js b/res/app/scripts/services/deviceService.js
index acf37748..da42f15e 100644
--- a/res/app/scripts/services/deviceService.js
+++ b/res/app/scripts/services/deviceService.js
@@ -51,6 +51,16 @@ define(['./module', 'oboe'], function(mod, oboe) {
       modify(get(data), data)
     })
 
+    socket.on('group.join', function(data) {
+      modify(get(data), data)
+    })
+
+    socket.on('group.leave', function(data) {
+      modify(get(data), {
+        owner: null
+      })
+    })
+
     oboe('/api/v1/devices')
       .node('devices[*]', function(device) {
         // We want to skip other arguments
diff --git a/res/app/views/partials/deviceList.jade b/res/app/views/partials/deviceList.jade
index 06a27b43..57e015cc 100644
--- a/res/app/views/partials/deviceList.jade
+++ b/res/app/views/partials/deviceList.jade
@@ -2,6 +2,6 @@ h1 Devices
 
 ul
   li(ng-repeat='device in devices track by device.serial')
-    span {{ device.serial }}
+    span {{ device.serial }} {{ device.present ? 'present' : 'absent' }} {{ device.owner.email }}
     button(ng-click="invite(device)") invite
     button(ng-click="kick(device)") kick