*Limitations*

Recently Microsoft announced that the Kinect device was discontinued [65], even if there is a cooperation with Intel to provide a transition from Kinect to Intel RealSense [66] or Orbbec cameras [67]. Even though our current implementation relies on the Kinect for body tracking, the Orbbec SDK or the sensor independent NUI Tracker middleware [68] are equivalent replacements for the purpose of this work. Furthermore, according to the specifications, Intel RealSense D415 combined with the NUI Tracker environment can output skeleton information at a double rate (60 fps) respect to Kinect device, providing more accuracy for fast movements.
