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tilt control

Tilt Control is designed to give access to hands-free and voice-free navigation of the entire Glass experience. With just voice, usage of Glass is greatly limited to a small subset of commands that are not available from all areas of the Glass interface.

Why do we need this?

  • This gives users with motor disabilities full access to Glass functionality in the many cases where voice commands are not available.


  • This assumes that you have a complete development computer setup and are familiar with ADB usage.
  • This also assumes that you have setup Glass in debug mode and have verified that you can connect to it from ADB.
  • Enable and calibrate the “Wink for picture” setting in the Glass settings screen. Try this a few times, make sure it’s comfortable, since this is how we will trigger Tilt Control usage.
  • Build the APK from the source code. http://www.github.com/kaze0/tiltcontrol
  • Install the APK as you normally would and verify that the “Tilt Control” command shows up in the “Ok, Glass” menu.
  • Once installed, you can run Tilt Control initially by using the voice command “Ok, Glass, Tilt Control.” At this point, it should immediately crash.


  • Run the following ADB command, “adb tcpip 5555″. This tells ADB to restart on Glass so it can be accessed by TCP on port 5555. The port was selected since it’s a port that we can get to from a normnal Android app. If you need to deactivate this, the easiest way is to restart Glass. Once you run this command you will not be able to connect to Glass via ADB over USB until this is deactivated.
  • Now run Tilt Control initially by using the voice command “Ok, Glass, Tilt Control.” This activates Tilt Control until you rrestart the device. It should run and you should see the main Tilt Control screen. IF it didn’t crash, this means it was setup correctly.


  • Once Tilt Control is installed and setup, winking while the screen of Glass is off, will turn on the screen an allow you to use Tilt Control to control Glass. A wink while the screen is already on, will not activate Tilt Control.
  • Tilt your head to the right or left to move the timeline in that direction. You should hear a little knock from the speaker right before it moves.
  • There’s 2 degrees of tilt activation to either side before you have to reset your head in the center.
  • Look down to simulate the back button.
  • Wink again to select something. This is potentially destructive, so Winking tends to be the best way of selecting stuff, because it’s not easily activated accidentally.

Technical Considerations

  • It’s been designed to crash when things don’t go right. This means something as simple as not being able to connect to ADB locally will cause a crash on start. Please contribute and let’s get this to a more user friendly state.
  • Tilt Control uses developer tools. After every Glass device restart, Tilt Control needs access to a computer to run setup before it will work again.
  • Uses really basic accelerometer data so it turns into a mess while walking. Patches welcome :)
  • It only activates via a wink, it will not activate if you turn Glass on with a head nod or tap to the side. This just makes it less annoying for development purposes, but it’s not a technical limitation.

How did you do this?

Glass is like a typical Android device, which means developer tools are capable of doing some extra things that you can’t do with a normal app. Tilt Control interfaces with ADB over TCP and sends movement commands to simulate navigation around the Glass interface by the use of the accelerometer.