How to manage interactive website elements using only a single button or switch?

For users with severe motor impairments, a traditional mouse or even a keyboard may be inaccessible. In such cases, specialized adaptive devices operating on the principle of a single button or switch, known as a switch, are used. Control is based on sequential scanning of interface elements, where focus automatically moves across the page according to a specific algorithm.

To ensure that the browser and operating system correctly transfer focus to control elements with this input method, developers must strictly follow semantic markup standards. All interactive components must have clear and visible focus boundaries. Using standard HTML tags like button and a guarantees that the scanning system can correctly recognize clickable areas and offer them to the user.

To create the most user-friendly interface, you should avoid endless carousels or rapidly changing content without the ability to pause it. A user navigating the site via scanning needs more time to make decisions. The availability of pause buttons for animations and a logical tab sequence make the site friendly to alternative input methods.