Unhindr Ltd ("we", "us") is committed to protecting your privacy. This policy explains how we collect, use, store, and protect your personal data when you use the Roliner system and its mobile application.
Roliner is a wearable medical device - an adjustable prosthetic liner system comprising the Liner, a Control Unit, and a Mobile Application - designed to improve the fitting and comfort of prosthetic legs.
A note about this website. This website itself does not set tracking cookies, run analytics, or use advertising or marketing pixels. Personal data is only processed when you explicitly contact us via the contact form (which opens your own email client to send) or when you use the Roliner system and its app. The Roliner system's data practices are documented in the sections below.
01
Who We Are
Unhindr Ltd is the data controller for the personal data collected through the Roliner system. We are subject to the UK GDPR and the Data Protection Act 2018. Contact us at enquiry@unhindr.com.
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What Data We Collect
Account Data
Username, email address, and password (encrypted) when you create an account. Stored securely via AWS Cognito.
Profile Data
Name, age, gender, height, weight, amputation details, and prosthetic usage time. This data is stored only on your device and is never uploaded to our servers.
Sensor Data
Pressure readings, accelerometer, gyroscope, temperature, step count, and battery level from the Roliner Control Unit. Stored locally and optionally uploaded to AWS S3.
Location Data
Approximate location collected every 60 seconds while the app is in use, with your permission. Used to provide context for comfort patterns.
Weather Data
Temperature, humidity, and conditions retrieved hourly from the OpenWeather API based on your approximate location. No identifying information is sent to OpenWeather.
Activity Labels
Activity type (walking, resting, exercise, etc.) that you select manually within the app.
HealthKit Data
Step count read from Apple Health with your permission. Displayed in the app only and never uploaded to any server.
03
Why We Collect Your Data
We process your data on the following legal bases:
Your consent
You provide explicit consent during registration for the collection of health-related sensor data, location data, and profile information. You can withdraw consent at any time.
To deliver our product
Processing your account data (email, username) is necessary to deliver the Roliner to you.
Our legitimate interests
We use anonymised performance monitoring and security logging to maintain and improve the product and your experience with it, where this does not override your rights.
04
How We Store and Protect Your Data
On your device
Profile data and sensor recordings are stored locally on your phone, protected by your device's hardware-backed encryption and app sandboxing - the same OS-level protections used on both iOS and Android. No other app can access this data.
In the cloud
Account authentication is handled by AWS Cognito (London, UK). Sensor data files are stored in AWS S3 (London, UK), encrypted at rest and in transit.
Privacy by design
Our authentication database and sensor data store are completely separate systems. Sensor files are keyed by device identifier, not your user account. This means your sensor data cannot be trivially linked to your identity.
All data stays in the UK - No personal data is transferred outside the United Kingdom or the European Economic Area.
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How Long We Keep Your Data
Account Data
Until you request account deletion.
Profile Data
Until you uninstall the app.
Sensor Data (Device)
Until you delete it or uninstall the app.
Sensor Data (Cloud)
Until you request deletion.
HealthKit Data
Not stored - displayed in real time only.
07
Your Rights
Under the UK GDPR, you have the right to:
Access your personal data and request a copy of it.
Correct your profile information directly in the app, or request corrections to account-level data.
Delete your data. Local data is removed when you uninstall the app. Cloud data will be deleted on request.
Export your data in a machine-readable format (JSON).
Object to processing based on legitimate interest.
Restrict processing in certain circumstances.
Withdraw consent at any time without affecting processing that occurred before withdrawal.
Lodge a complaint with the Information Commissioner's Office (ICO) at ico.org.uk.
To exercise any of these rights, contact us at enquiry@unhindr.com. We will respond within 30 days.
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Children's Data
Roliner is not directed at children under 16. We do not knowingly collect data from children under 16. Where a minor uses Roliner under clinical supervision, we require verified parental or guardian consent.
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Data Breach Procedures
If we become aware of a data breach that poses a risk to your rights, we will notify the ICO within 72 hours and inform affected users without undue delay.
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Changes to This Policy
We may update this policy to reflect changes in our practices or legal requirements. We will notify you of material changes through in-app notifications and updates at unhindr.com/privacy.
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