In this demo, we present two possible control interfaces for a robotic extra-finger called the Robotic Sixth Finger. One interface is an instrumented glove able to measure the human hand posture. The aim is the integration of the motion of robotic finger with that of the human hand so to achieve complex manipulation skills. The second interface is a ring with a push button embedded so to implement a simple and intuitive control. The presence of an extra robotic finger in human hand enlarges the workspace, increases the grasping capabilities and the manipulation dexterity. We will propose a series of grasping and manipulation tasks to be performed with the help of the robotic sixth finger and the relative interface so to prove their effectiveness in augmenting the human hand capabilities.