Action Cards allow you to connect gestures to actions. A swipe to the left could trigger a chord or it can start a beat. Then once the action card is active, it allows you to track your hand in X,Y, Z or roll, pitch and yaw. Add some filter by just rotating your hand.
The action card has a group color at the top. The name of the action card is next, followed by the gesture that triggers it. After that, the hand and number of fingers to trigger it are displayed.