Humans interact with machines in a variety of ways, thus many forms of HCI (Human-Computer Interaction) has been developed. To control the robot, a new technology is invented, which is virtual reality (VR). It includes hands, face and other parts of the body. Hand gestures can be divided into two categories: static and dynamic gestures. In static gestures, the gestures usually do not change its shape over time. Depending on the type of the input data, the hand gesture recognition can also be divided into two categories: appearance-based and 3D model-based algorithms. Appearance-based algorithms use the data acquired from the silhouette or contour of the input images. Meanwhile 3D model-based algorithms use volumetric or skeletal data, or even a combination of the two.