Fast and flexible selection with a single switch
Tamara Broderick, David John Cameron MacKay

TL;DR
The paper introduces Nomon, a flexible single-switch selection method that adapts to user clicking ability, enabling efficient selection of arbitrary screen points for applications like writing and drawing, outperforming traditional scanning methods.
Contribution
We present Nomon, a novel single-switch selection system that allows direct, flexible, and efficient selection of any screen point, improving speed and accuracy over existing methods.
Findings
Novice users wrote 35% faster with Nomon than with scanning.
An experienced user achieved 9.3 words per minute with no errors.
Nomon adapts automatically to individual clicking abilities.
Abstract
Selection methods that require only a single-switch input, such as a button click or blink, are potentially useful for individuals with motor impairments, mobile technology users, and individuals wishing to transmit information securely. We present a single-switch selection method, "Nomon," that is general and efficient. Existing single-switch selection methods require selectable options to be arranged in ways that limit potential applications. By contrast, traditional operating systems, web browsers, and free-form applications (such as drawing) place options at arbitrary points on the screen. Nomon, however, has the flexibility to select any point on a screen. Nomon adapts automatically to an individual's clicking ability; it allows a person who clicks precisely to make a selection quickly and allows a person who clicks imprecisely more time to make a selection without error. Nomon…
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