How do I activate/exit the AirMouse mode?
Position your hand vertically (your thumb should be on top, facing up, and your pinky should be at the bottom). Point your index finger forward, keep your thumb next to your index finger so that they are both pointed in the same direction. Wait until you feel a single haptic vibration.
How do I get out of AirMouse Mode?
Hold your hand horizontally, so that it is parallel to the floor. You will feel a haptic vibration when it goes back into keyboard mode. You can also put the thumb glider on a surface and move it slightly to get out of AirMouse Mode.