diff --git a/lib/cli.js b/lib/cli.js
index d12c60aa..558cfaf2 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -105,6 +105,27 @@ program
     })
   })
 
+program
+  .command('console')
+  .description('start console')
+  .option('-s, --connect-sub <endpoint>', 'sub endpoint', cliargs.list)
+  .option('-p, --connect-push <endpoint>', 'push endpoint', cliargs.list)
+  .action(function(options) {
+    if (!options.connectSub) {
+      this.missingArgument('--connect-sub')
+    }
+    if (!options.connectPush) {
+      this.missingArgument('--connect-push')
+    }
+
+    require('./roles/console')({
+      endpoints: {
+        sub: options.connectSub
+      , push: options.connectPush
+      }
+    })
+  })
+
 program
   .command('local [serial..]')
   .description('start everything locally')
diff --git a/lib/roles/console.js b/lib/roles/console.js
new file mode 100644
index 00000000..506592da
--- /dev/null
+++ b/lib/roles/console.js
@@ -0,0 +1,87 @@
+var readline = require('readline')
+
+var zmq = require('zmq')
+var Promise = require('bluebird')
+
+var logger = require('../util/logger')
+var tx = require('../util/tx')
+
+module.exports = function(options) {
+  var log = logger.createLogger('console')
+
+  // Input
+  var sub = zmq.socket('sub')
+  sub.subscribe('ALL')
+  options.endpoints.sub.forEach(function(endpoint) {
+    log.info('SUB connected to %s', endpoint)
+    sub.connect(endpoint)
+  })
+
+  // Output
+  var push = zmq.socket('push')
+  options.endpoints.push.forEach(function(endpoint) {
+    log.info('PUSH connected to %s', endpoint)
+    push.connect(endpoint)
+  })
+
+  // User input
+  var rl = readline.createInterface({
+    input: process.stdin
+  , output: process.stdout
+  })
+  rl.setPrompt('stf> ')
+  rl.prompt()
+
+  rl.on('line', function(line) {
+    var args = line.trim().split(/\s+/g)
+    switch (args.shift()) {
+      case 'help':
+        console.log()
+        console.log('Available commands:')
+        console.log()
+        console.log('  help - show help')
+        console.log()
+        rl.prompt()
+        break
+      case 'ls':
+        tx.q(push, sub, 'ALL', ['ls'])
+          .timeout(1000)
+          .then(function(results) {
+            results.forEach(function(result) {
+              console.log('%s', result.serial)
+            })
+          })
+          .catch(Promise.TimeoutError, function(err) {
+            console.log(err.message)
+          })
+          .finally(function() {
+            rl.prompt()
+          })
+        break
+      case 'shell':
+        tx.q(push, sub, 'ALL', ['shell', args.join(' ')])
+          .timeout(1000)
+          .then(function(results) {
+            results.forEach(function(result) {
+              console.log('%s: %s', result.serial, result.value.toString().trim())
+            })
+          })
+          .catch(Promise.TimeoutError, function(err) {
+            console.log(err.message)
+          })
+          .finally(function() {
+            rl.prompt()
+          })
+        break
+      case 'exit':
+      case 'quit':
+        process.exit(0)
+        break
+      default:
+        console.log('Unknown command')
+        rl.prompt()
+        break
+    }
+  })
+
+}
diff --git a/lib/roles/coordinator.js b/lib/roles/coordinator.js
index 9d590cbb..b6559d6a 100644
--- a/lib/roles/coordinator.js
+++ b/lib/roles/coordinator.js
@@ -16,6 +16,10 @@ module.exports = function(options) {
     appDealer.connect(endpoint)
   })
 
+  appDealer.on('message', function(channel, id, cmd) {
+    devDealer.send([].slice.call(arguments))
+  })
+
   // Device side
   var devDealer = zmq.socket('dealer')
   options.endpoints.devDealer.forEach(function(endpoint) {
@@ -24,6 +28,6 @@ module.exports = function(options) {
   })
 
   devDealer.on('message', function() {
-    log.debug(arguments)
+    appDealer.send([].slice.call(arguments))
   })
 }
diff --git a/lib/roles/device.js b/lib/roles/device.js
index 09178116..a3e36ea0 100644
--- a/lib/roles/device.js
+++ b/lib/roles/device.js
@@ -18,10 +18,34 @@ module.exports = function(options) {
     sub.connect(endpoint)
   })
 
-  sub.on('message', function() {
-    var args = [].slice.call(target)
-      , channel = args.unshift()
-      , cmd = args.unshift()
+  sub.on('message', function(channel, id, cmd) {
+    push.send([id, options.serial, 'ACK'])
+    switch (cmd.toString()) {
+      case 'ls':
+        log.info('Responding to "ls"')
+        push.send([id, options.serial, 'OKY'])
+        break
+      case 'shell':
+        var line = arguments[3]
+        log.info('Running shell command "%s"', line)
+        adb.shellAsync(options.serial, line)
+          .then(function(out) {
+            var chunks = []
+            out.on('data', function(chunk) {
+              chunks.push(chunk)
+            })
+            out.on('end', function(chunk) {
+              push.send([id, options.serial, 'OKY', Buffer.concat(chunks)])
+            })
+          })
+          .catch(function(err) {
+            push.send([id, options.serial, 'ERR', err.message])
+          })
+        break
+      default:
+        log.warn('Unknown command "%s"', cmd)
+        break
+    }
   })
 
   // Respond to messages directed to everyone
@@ -35,7 +59,10 @@ module.exports = function(options) {
   })
 
   // Introduce worker
-  push.send(['HELO', options.serial])
+  // push.send(['HELO', options.serial])
+
+  // Adb
+  var adb = Promise.promisifyAll(adbkit.createClient())
 
   function gracefullyExit() {
     log.info('Bye')
diff --git a/lib/util/tx.js b/lib/util/tx.js
new file mode 100644
index 00000000..0d4c0b61
--- /dev/null
+++ b/lib/util/tx.js
@@ -0,0 +1,77 @@
+var uuid = require('node-uuid')
+var Promise = require('bluebird')
+
+function newId() {
+  return uuid.v4()
+}
+
+module.exports.newId = newId
+
+function q(output, input, channel, args) {
+  var deferred = Promise.defer()
+    , ourId = newId()
+    , results = []
+    , mapping = {}
+    , remaining = 0 // @todo pass expected number to query
+
+  function onMessage(theirId, serial, state, data) {
+    if (ourId === theirId.toString()) {
+      serial = serial.toString()
+      state = state.toString()
+
+      var mapped = mapping[serial]
+
+      if (!mapped) {
+        results.push(mapped = mapping[serial] = {
+            serial: serial
+          , state: state
+          , progress: 0
+          , value: null
+        })
+      }
+      else {
+        mapped.state = state
+      }
+
+      switch (state) {
+        case 'ACK':
+          deferred.progress(results)
+          ++remaining
+          break
+        case 'PRG':
+          mapped.progress = +data
+          deferred.progress(results)
+          break
+        case 'ERR':
+          mapped.value = data
+          --remaining
+          break
+        case 'OKY':
+          mapped.progress = 100
+          mapped.value = data
+          --remaining
+          break
+      }
+
+      if (remaining) {
+        deferred.progress(results)
+      }
+      else {
+        deferred.resolve(results)
+      }
+    }
+  }
+
+  input.on('message', onMessage)
+  input.subscribe(ourId)
+
+  output.send([channel, ourId].concat(args))
+
+  return deferred.promise.finally(function() {
+    input.unsubscribe(ourId)
+    input.removeListener('message', onMessage)
+    mapping = results = null
+  })
+}
+
+module.exports.q = q