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Updated: Apr 18, 2026

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones

Published on: October 5, 2020

Portable tongue-supported human computer interaction system design and implementation.

Rohan Quain, Masood Mehmood Khan

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|January 9, 2015

Summary

This study introduces an affordable, portable tongue-supported human-computer interaction (TSHCI) system for critically ill patients. The new design aims to overcome limitations of current TSHCI technologies, improving accessibility for individuals with severe spinal cord injuries.

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Area of Science:

Biomedical Engineering
Rehabilitation Technology
Assistive Technology

Background:

Critically ill patients, especially those with high spinal cord injuries (above C7), face significant communication and computer access challenges.
Existing tongue-supported human-computer interaction (TSHCI) systems offer potential but are often limited by cost, intrusiveness, portability, and ease of use.
There is a need for improved TSHCI solutions to enhance the quality of life and independence for severely disabled individuals.

Purpose of the Study:

To propose and evaluate a novel, low-cost, less-intrusive, portable, and user-friendly tongue-supported human-computer interaction (TSHCI) system.
To demonstrate the feasibility and performance of the proposed TSHCI system through practical applications.
To address the limitations of current TSHCI technologies and promote their real-world adoption.

Main Methods:

Development of a new TSHCI system focusing on affordability, minimal invasiveness, portability, and ease of use.
Implementation and testing of the proposed TSHCI system in two distinct application scenarios.
Detailed analysis of the design considerations and performance metrics of the developed TSHCI system.

Main Results:

The proposed TSHCI system demonstrates a low-cost, less-intrusive, portable, and easy-to-use design.
Successful implementation and reporting of two distinct applications utilizing the developed TSHCI system.
Performance evaluation indicates the system's potential to overcome existing TSHCI limitations.

Conclusions:

The developed TSHCI system offers a promising solution for improving computer and communication access for critically ill patients with severe mobility impairments.
The system's design addresses key limitations of current technologies, paving the way for wider adoption in clinical and home settings.
Further research and development can build upon this design to enhance TSHCI capabilities for individuals with high spinal cord injuries.