Several Human–Machine/Computer Interfaces (HMI/HCI) had been developed in recent years. Some
designs were specifically made for people with disabilities such as injured-vertebra, apoplexy or poliomyelitis,
Amyotrophic Lateral Sclerosis (ALS), and Motor Neuron Disease, (MND). In this paper, we proposed
an eye-movement tracking system. Based on Electro-Oculography (EOG) technology we detected
the signal with different directions in eye-movements and then analyzed to understand what they represented
about (e.g. horizontal direction or vertical direction). We converted the analog signal to digital
signal and then used as the control signals for Human–Computer Interface (HCI). In order to make the
system ‘‘robust”, several applications with EOG-based HCI had been designed. Our preliminary results
revealed more than 90% accuracy rate for examining the eye-movement that may become a new useful
human–machine user interface in the near future.