“…Table 2 identifies telementoring systems with smartglasses and their employed interaction styles discussed in this section. [13] No MS HoloLens Voice-based Kopetz et al [22] No Google Glass Gesture-based Rochlen et al [25] No Epson Moverio BT-200 Tangible UI Huang et al [27] No Brother AiRScouter WWD-200B Wireless Two-button Foot Pedal Aebersold et al [34] No N/A Video, Quiz Hanna et al [14] Yes MS HoloLens Voice-based, Telestration Yoon et al [23] Yes Glass Enterprise Edition 2 Voice-based Lacy et al [35] Yes N/A Voice-based Rio et al [26] Yes Epson Moverio BT-200 Telestration Greenberg et al [32] Yes N/A Voice-based Liu et al [15] Yes MS HoloLens Telestration Meijer et al [36] Yes N/A Gesture-based Andersen et al [37,38] Yes N/A Touch-based, Telestration STAR [16][17][18][19] Yes MS HoloLens Touch-based, Voice-based, Telestration Mitsuno et al [20] Yes MS HoloLens Voice-based, Telestration Mentis et al [39] Yes N/A Voice-based, Telestration Lin et al [40] Yes MS HoloLens Telestration Gasques et al [21] Yes MS HoloLens, HTC Vive Pro Telestration, Avatar Hassan et al [41] Yes N/A N/A Giuseppe et al [42] Yes Head-mounted Camera Voice-based, Gesture-based Semsar et al [31] Yes N/A Voice-based, Telestration Wang et al [7] Yes HTC Vive HMD Gesture-based, Head Pointer, Telestration Wang et al [8] Yes HTC Vive HMD Gesture-based, Head Pointer, Eye Gaze, Telestration…”