“…These include: entertainment applications [8], [9], hands-free [10], emergency situation [11], search and rescue missions [12]. These applications recognize gesture commands [8], [9], [11], [12], voice commands [10], [13], [14], and even multimodal interactions [10], [15], [16], [17], [18]. User feedback is provided in different ways, such as visual [19], [20], haptic [4], [21], or with the help of a controller [22].…”