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Embedded systems for supporting computer accessibility.

Davide Mulfari1, Antonio Celesti1, Maria Fazio1

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This study presents a novel assistive technology (AT) solution using open-source hardware and a Linux embedded system. It enables users with disabilities to control diverse computing devices with a single AT tool via USB HID commands.

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Area of Science:

  • Computer Science
  • Human-Computer Interaction
  • Assistive Technology

Background:

  • Customized assistive technology (AT) software enables users with disabilities to interact with computer systems via personal devices.
  • Existing AT solutions often require specific configurations for different target devices.
  • A unified approach is needed to control various computing platforms without specialized software installation.

Purpose of the Study:

  • To investigate a method for using existing AT equipment to access diverse devices without requiring assistive preferences.
  • To develop a versatile solution that leverages open-source hardware and affordable embedded systems.

Main Methods:

  • Utilizing an affordable Linux embedded system as the core component.
  • Capturing data from assistive software running on the user's personal device.
  • Processing data to generate native Human Interface Device (HID) keyboard and mouse commands for target devices.
  • Employing the USB HID protocol for command transmission.

Main Results:

  • The developed solution successfully controls various computing devices, including conventional computers and mobile devices.
  • The system supports any operating system on the target machine.
  • No specialized software installation is required on the target devices.

Conclusions:

  • A single assistive tool can be used to control a wide range of computing platforms, enhancing accessibility.
  • The integration of open-source hardware and embedded systems offers an affordable and flexible AT solution.
  • This approach significantly reduces the complexity for users with disabilities to interact with multiple devices.