Compass devices shall provide NEWT w/ the current direction. Initial implementation shall be done for Android and Windows8 devices and GNU/Linux if available. GNU/Linux may be realized either via X11 or direct. Sensors (Light, compass, accelerometer, gyro). These are all exposed under sysfs. <http://www.bestandroidblog.com/how-to-install-the-archlinux-on-the-t/>