Project Overview

This conceptual project explores how to apply equity-focused design to an everyday piece of hardware: a computer mouse. The goal was to move beyond a "one-size-fits-all" model and create a product addressing the specific needs of individuals from historically overlooked user groups.

  • My Role: UX Researcher, Product Designer
  • Scope: Conceptual Design, User-centered Research
  • Methodology: Equity-Focused Design
  • Timeline: 1-week Sprint

The Challenge: The “Average” Hand Doesn’t Exist

The standard computer mouse is a marvel of industrial design, but it's built on a fallacy: the "average" user. Its form factor is optimized for a narrow range of hand sizes and abilities. This design choice implicitly excludes a significant portion of the population, leading to discomfort, inefficiency, and even long-term repetitive strain injuries (RSI).

While inclusive design might prompt us to create a product for a broad group (e.g., people with large hands), equity-focused design challenges us to go deeper. It asks "How can I solve this problem for a specific individual within that group?"

Mouse Pain Points

Identifying the overlooked

The first step was to identify the user groups who are poorly served by traditional mouse design. These included:

  • Individuals with limb differences
  • Users with hand sizes on the extreme ends of the spectrum (both very small and very large)
  • Power users (gamers, editors) who require custom button layouts.
  • Left-handed users who are often forced to adapt to a right-handed world

For this case study, I chose to focus on the challenge of hand size, specifically designing for an individual with larger than average hands.

Zooming In: Meet Alex

To ground our design in reality, I have created a user persona.

Name: Alex Profession: Architect Goal: To work efficiently and comfortably on detailed CAD software for 8+ hours a day.

Pain Points with a Standard Mouse:

  • Poor Ergonomics: Alex's hand cramps because it can't rest naturally. His palm hovers, and his fingers must curl uncomfortably to grip the device (the "claw grip").
  • Inaccurate Clicks: The small size leads to frequent accidental right-clicks when he means to left-click.
  • Button Accessibility: Reaching the forward/back side buttons requires him to shift his entire grip, breaking his workflow.
  • Long-Term Risk: Prolonged use causes wrist and joint pain, putting him at risk for RSI.

User Alex

Ideation & The Equity-Focused Solution

I have developed several solutions, ranging from inclusive to truly equity-focused:

  1. Sized Options (Inclusive): Offer the mouse in S, M, and L sizes. A good step, but still groups people into broad categories.
  2. Modular Plates (Inclusive): Create a mouse with swappable top shells and side grips to adjust its length and width. More customizable, but still based on pre-manufactured parts.
  3. The Bespoke Mouse (Equity-Focused): This became our core concept. What if the mouse was created for Alex and Alex alone? This solution leverages modern technology to create a truly personal device.

Mouse Designs Sketches

Solution: The “Alex Mouse” - A 3D-Printed Bespoke Peripheral

The proposed solution is a service-product hybrid.

The Process

  1. 3D Scan: The user (Alex) takes a high-resolution 3D scan of his hand in a natural, resting "grip" position using either a standard smartphone or one with LiDAR capabilities (like iPhone or apps such as Polycam).
  2. Custom Modeling: The scan data is used to algorithmically generate a unique mouse shell that is a perfect negative of the user's grip. Button placement is adjusted based on the natural resting places of his fingers.
  3. 3D Printing & Assembly: The custom shell is 3D printed using lightweight, durable materials. Standardized, high-quality internal components (sensor, switches, scroll wheel) are then assembled inside the bespoke shell.

Mouse Final Design

Key Features & Benefits for Alex

  • Perfect Ergonomics: The mouse fits his hand like a glove, eliminating strain and allowing his hand to be fully supported.
  • Effortless Clicks: The primary buttons are positioned perfectly under his fingers, preventing mis-clicks.
  • Optimized Workflow: Side buttons are placed exactly where his thumb naturally rests.
  • Reduced Health Risk: The natural posture dramatically reduces the risk of long-term RSI.

Reflection & Key Takeaways

This case study demonstrates that by shifting our focus from a broad group to a specific individual, we can uncover more innovative and meaningful solutions. Equity-focused design isn't about capturing the largest market segment; it's about delivering the highest possible value to an individual who has been consistently ignored.

While a bespoke mouse may seem like a niche product, it opens the door for a new category of personalized peripherals that prioritize user health, comfort, and productivity above all else. It proves that sometimes, the best way to design for everyone is to start by designing perfectly for someone.