The input efficiency of chord keyboards

Area of Science:

• Human-Computer Interaction
• Ergonomics
• Usability Engineering

Background:

• Traditional mobile input devices often present usability challenges.
• Ergonomic design principles are crucial for optimizing user interaction with technology.
• Chord keyboards offer a potential alternative for efficient text input.

Purpose of the Study:

• To evaluate the usability and operating performance of an innovative mobile input device.
• To assess the impact of multiple characters per key on user performance and experience.
• To investigate the integration of ergonomic design in chord keyboard development.

Main Methods:

• Usability tests were conducted with twelve right-handed subjects (ages 20-30) without wrist disabilities.
• The study focused on a chord keyboard model integrating ergonomic design principles.
• Data analysis involved comparing the means to identify performance differences.

Main Results:

• Keyboards featuring multiple characters per key led to increased user confusion.
• Despite initial confusion, the use of multiple characters per key demonstrated enhanced input performance.
• The innovative mobile input device model showed potential for improved efficiency.

Conclusions:

• Chord keyboards with multiple characters per key present a trade-off between learnability and performance.
• Ergonomic design principles can be successfully integrated into novel mobile input devices.
• Further research is warranted to optimize multi-character key layouts for reduced user confusion.