Insights
Reporting and analysis on the hardware and software of movement, the sensors, models, platforms, and integrations that turn physical activity into data. Coverage stays descriptive and neutral, drawing on documented methods and validation rather than vendor claims.
Spotlight: The Indie Developers Building Coaching Tools
Behind many niche training apps is a single developer mapping device APIs and reconciling timestamps late at night. Their unglamorous integration work is what lets small clubs use data once reserved for pro teams.
Battery Budgets Shape What You Can Measure
How often a device can sample and transmit is capped by the energy it carries, which quietly limits every metric downstream. Power, not ambition, is often the real constraint on a wearable's design.
How Local Positioning Systems Track a Whole Team
Optical and radio systems locate every player to centimeter scale, turning a match into a stream of coordinates. The data is rich, but calibration and dropout handling decide whether it is usable.
Validating a Device Against a Trusted Reference
Heart rate is checked against ECG, motion against optical capture, position against surveyed ground truth. Reported error ranges and the conditions behind them separate a credible claim from a marketing figure.
The Case for On-Device Machine Learning
Inference that stays on the wearable protects privacy and survives a dead network, at the price of fitting a model into kilobytes. It is a constraint that is reshaping how movement models are designed.
Webhooks and the Rise of Live Metric Streams
Pushing metrics into apps and broadcast overlays as a session unfolds turns post hoc analysis into real time feedback. The plumbing is simple in principle and unforgiving when a device drops out.
Smart Equipment Moves Sensing Off the Wrist
Instrumented balls, bats, and boards embed sensors into the gear itself, capturing signals a wrist device never could. The form factor opens new metrics and a new set of durability and calibration problems.
Interoperability Standards Worth Watching
A handful of open formats and connectivity standards quietly decide whether devices from rival vendors can share data. Their adoption shapes what developers can build far more than any single product launch.