“…− For visual impairment [33,[97][98][99][100], they include gesture-to-voice technology, alarm signallers with light/sound/vibration, talking/touching watches, braille displays, GPS locators, ultrasound, and infrared based devices; − For hearing impairment [33], they involve text-reader devices, structured sign language, drawing or writing, augmentative communication devices, talking/touching watches; − For speech impairment [33,[101][102][103][104], the examples include voice-input voice-output aids, telepresence robotics, mobile communication jackets, eye-gaze tracking systems, and Morse glasses; − For cognitive impairment [33,105,106], there are GPS locators and telepresence robotics; − For physical impairment [30,33,107], there are technologies such as intelligent wheelchairs, exoskeletons, etc.…”