Muy interesante el artículo Creating Accessible Content for People Who Use Eye-Tracking Devices en el que se proporcionan consejos para mejorar la accesibilidad de cara a los usuarios que emplean sistemas de "eye tracking":
Eye-tracking devices (also called eye trackers) are an assistive technology developed for people with mobility conditions, neurocognitive conditions, and other disabilities. The technology typically uses a low-powered infrared light-emitting diode (LED) to illuminate the user’s eye. A camera tracks the reflections from the LED, and software processes eye movements.
By looking at specific parts of the screen, users can interact with on-screen keyboards, mouse simulators, and other input fields. The technology addresses many of the challenges that people with disabilities encounter when using a mouse: Users are less likely to become fatigued or make accidental clicks.
When properly calibrated, eye trackers provide a comfortable, intuitive way to browse the internet. However, all assistive technologies work more effectively on well-designed websites. The Web Content Accessibility Guidelines (WCAG) provide the best framework for designing content that works for all users — including people with disabilities who use assistive technology.
Below, we’ll discuss a few design and development decisions that could impact people who use eye-tracking technology to access websites or mobile apps.