The Sensor That Researchers Chose
A patented Danish invention. 11 peer-reviewed clinical studies. A platform rebuilt from the ground up. This is how Bandcizer got here.
The invention
In 2013, Danish inventor Anders Stengaard Sørensen filed a patent for something that didn't exist: a sensor that could measure what happens to a resistance band during exercise. Not the person's movement. The band itself.
The result was US Patent 9,561,400 — “Sensor unit for quantification of physical training with rubber band” — granted in 2017. A capacitive sensor that attaches magnetically to flat resistance bands and measures deformation at 20 times per second. Force, timing, and quality — captured directly from the band, not inferred from body motion.
That invention became Bandcizer. Anders founded the company in Roskilde, Denmark to bring the sensor from prototype to product. After the initial development phase, the company continued under new ownership to scale the technology, pursue clinical validation, and build the software platform that clinics use today.
Built in research, validated by researchers
The sensor caught the attention of clinical researchers. Between 2015 and 2024, independent research groups at universities and hospitals across Denmark, Australia, and beyond selected Bandcizer as their measurement instrument for peer-reviewed studies. They weren't contracted to validate it — they evaluated their options and chose it.
Why we went quiet — and what changed
The Bandcizer sensor was put on hold due to several converging factors. During the COVID-19 pandemic, development projects and implementation activities across the healthcare sector were deprioritised as resources shifted to managing the crisis and related health challenges. This meant limited opportunities for clinical collaboration, testing, and real-world implementation.
At the same time, the market for training and rehabilitation technology was still maturing. The integration of sensor technology into elastic band training and physiotherapy products hadn't fully arrived. Demand for digital exercise data and sensors for monitoring rehabilitation was still developing, and the infrastructure for integrating these tools into clinical workflows and digital platforms was limited.
The combination of the pandemic's impact on healthcare and a market not yet ready for broad implementation of sensor technology in this category led to a period of limited activity.
That has changed.
The healthcare sector has accelerated its digitalisation. Interest in data-driven training and rehabilitation monitoring has grown significantly. And society has shifted — there is now genuine demand for helping patients achieve quality in their exercise, not just compliance.
So we rebuilt. The hardware — the same patented sensor those research groups validated — hasn't changed. But the software has been rebuilt from the ground up: a new mobile app, a new clinical dashboard, and a workflow designed around how physiotherapy clinics actually operate.
The result is a platform where the sensor captures objective exercise data, the app guides the patient through their prescribed programme, and the dashboard gives the treating physiotherapist the data they need — without asking the patient to self-report.
What we believe
Measurement beats self-report
When you measure what the resistance band actually did, the conversation between patient and therapist changes. Objective data replaces guesswork.
The sensor is the validated component
Our credibility comes from the hardware — the same patented capacitive measurement method used in 11 independent clinical studies. The software serves the data. The sensor generates it.
Clinics need workflow, not just data
A sensor that captures perfect data is useless if the clinic can't act on it. The platform is designed around prescribe → guide → verify: the physiotherapist prescribes, the app guides, the sensor verifies.
Per-sensor, not per-practitioner
Your cost should scale with how many patients you monitor, not how many staff you have. The whole team gets dashboard access. One price per sensor.
Patented technology
US Patent 9,561,400 B2
Sensor unit for quantification of physical training with rubber band
Inventor
Anders Stengaard Sørensen
Filed
2013 (priority date 2012)
Granted
February 2017
The patent covers the capacitive measurement method that detects resistance band deformation — the core technology that enables objective force measurement from the band itself, rather than inferring it from body movement.
View patent on Google Patents →The company
Bandcizer ApS is a Danish medtech company based in Roskilde. We develop hardware and software for objective exercise measurement in clinical rehabilitation.
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