Accessible Button Arrangements of Touchscreen Interfaces for Visually Impaired Users

Regardless of the improvements of accessibility functions on touchscreen computers, they have some problems using touchscreen interfaces including smartphones and tablets. The reason includes the arrangements of accessible objects may differ in users' visual conditions because the manipulations under screen readers are different from those without screen readers, the characteristics of object arrangements on the touchscreen computers for the visually impaired remain unclear. In this paper, our objective is to clarify the accessible button arrangement features in smartphones for users with visual impairments.