| | Wheelchair | Feature | Device | Commands |
| Intrusive interfaces | Chen et al. [31] | Head orientation | Tilt sensors, microprocessor | Go, back, left, and right | SIAMO project [32] | Eye gaze | Electrode | Go, back, left, and right | Wheelesley [33] | Eye gaze | Electrodes (EOG) | Go, back, left, and right |
| Nonintrusive interfaces | Voice | SIAMO project [32] | Voice | Microphone | Go, back, left, and right | ROB Chair [34] | Voice | Head microphone | Go, stop, speed up, speed down, and rotate | NAVChair [35] | Voice | Computer | Go, stop, back, left, and right | TAO project [36] | Voice | Microphone | Go, stop, back, left, right, and speed down | Vision | Yoshida et al. [38] | Face | Tow video camera | Go, stop, left, and right | HGI [37] | Head & nose | Webcam, data acquisition board | Go, left, right, speed up, and speed down | SIAMO [32] | Head | CCD camera | Go, left, right, speed up, and speed Down | Rabhi et al. [8] | Hand | Webcam, data acquisition board | Analog commands | Proposed smart joystick | Joystick | Data acquisition board | Analog commands |
|
|