Advanced International Journal for Research

E-ISSN: 3048-7641   •   Impact Factor: 9.11

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Anthropometrics in Action: A Mechanical Engineering Study of Finger Length, Typing Efficiency, and Ergonomic Design

Author(s) Saksham Dhingra
Country India
Abstract Keyboards are one of the most crucial and most used interfaces on the planet. However, they are designed to have an “average” user in mind. This raises questions on whether anthropometric variation, specifically finger length, affects typing efficiency. The purpose of this study was to examine the relationship between middle finger length and typing efficiency, specifically typing speed measured in words per minute (WPM) and accuracy (%). Data were collected through a Google Forms survey from 50 participants, where they measured the length of their middle finger using a ruler and took a standardized one-minute online typing test on a laptop or desktop. Results indicated a moderate positive correlation: longer finger lengths were associated with faster typing speed (r = 0.43) and slightly greater accuracy (r = 0.366). These findings propose that while finger length is not the sole determinant of typing efficiency, it has a measurable impact. From an engineering perspective, this study emphasizes the significance of ergonomics and anthropometrics in keyboard design, supporting the need for more adaptable layouts that reduce fatigue and strain, while enhancing efficiency and performance.
Keywords Anthropometry; Ergonomics; Finger length; Typing efficiency; Typing speed; Typing accuracy; Human-computer interaction; Keyboard design; Mechanical engineering; User-centered design
Field Computer > Design
Published In Volume 6, Issue 5, September-October 2025
Published On 2025-10-13
DOI https://doi.org/10.63363/aijfr.2025.v06i05.1578
Short DOI https://doi.org/g97nw7
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