Latest: v202605221130

Clinical-Grade Mobility Assessment

Data Walker clips to any rolling walker to measure distance traveled during standardized mobility tests. Flash firmware, access documentation, and manage releases.

Released May 22, 2026

The Data Walker Story

From a simple idea to accessible healthcare technology

The Data Walker is a proof-of-concept device demonstrating that a clinically relevant tool for measuring gait distance and walking speed can be developed using readily available hardware combined with innovative yet straightforward programming.

The concept originated in 1998 when the developer envisioned adapting a Hall-effect bicycle odometer for clinical gait assessment. After successfully recalibrating an unused Schwinn digital speedometer for clinical use, the device was employed for many years in a Long Island nursing home to objectively measure walking distance and gait speed, supporting patient mobility assessment and rehabilitation outcomes.

Today, technological advancements and software improvements have enabled us to refine and expand upon the original concept while preserving its simplicity. The Data Walker serves as a demonstration that powerful mobility assessment tools can be created from affordable, readily available components. By combining accessible hardware with straightforward programming, individuals, clinicians, students, researchers, and makers can build their own customized systems and contribute to the development of practical healthcare technology.

What began as a simple idea to improve mobility measurement has evolved into a powerful demonstration of how accessible technology can be leveraged to create meaningful innovations in healthcare.

See It In Action

The Data Walker clinical mobility assessment system

Why Data Walker?

Purpose-built for clinical mobility assessments

In-Browser Flashing
Flash firmware directly from your browser using Web Serial API. No software installation required.
Self-Test Verification
Built-in diagnostics verify Hall sensor alignment and magnet spacing on every boot.
Clinical-Ready
Designed for healthcare professionals conducting mobility assessments with rolling walkers.
Getting Started
New to Data Walker? Start here.
Latest Release
Version v202605221130

Changelog

  • Added daily calibration walk at boot time
  • Bidirectional 3 m measurement with three-gate validation
  • Improved distance accuracy with calibration factor
View Release Details

Ready to get started?

Flash the latest firmware to your Data Walker device in under a minute using just your browser.

Go to Releases