Biocapture privacy policy
Last modified: 12/11/2026
This policy explains what information the BioCapture app collects, why, and how Onnu Ltd looks after it.
1. Who we are
BioCapture is provided by Onnu Ltd, York House, York Road, Maidenhead, SL6 1SF, United Kingdom ("Onnu", "we", "us"). Onnu is responsible for the information collected through the app.
Contact: info@onnu.com
2. Who the app is for
BioCapture is a business tool. It is used by trained operators at sites running Onnu CarboFlow plants, on a tablet provided for that purpose, to record production readings. It is not intended for the general public or for anyone under 18. Sites sign in with an account issued by Onnu; individuals cannot create accounts in the app.
3. What we collect
When an operator uses BioCapture, the app collects:
- The operator's name, chosen from a list or entered once, so each reading records who took it.
- Production readings: biomass and biochar moisture and density, the feedstock type, any notes or issue reports, and whether a sample was flagged as problematic.
- Photos: pictures of the moisture meter reading and of the sample, taken with the tablet's camera as evidence for each reading.
- Times: when each sample was taken and submitted, and when our systems received it.
- The site account used to sign in, and technical information needed to deliver readings and reminders (such as an app version and a notification token for the tablet).
The app does not collect location, contacts, messages, payment details, or any information from other apps.
4. Why we collect it
We use this information to:
- run and control the CarboFlow plant, including passing readings to the plant's control system;
- keep an accurate, traceable record of production and sample quality;
- send reminders when a reading is due; and
- support quality checks, maintenance and, where applicable, the verification of carbon removal.
Our lawful basis is our legitimate interests in operating and supporting the plant and keeping accurate records, and performing our contract with the site operator.
5. Where it goes and who can see it
Readings and photos are sent over an encrypted connection to Onnu's systems (including our BioSource platform) and stored there. They are used by Onnu and, where agreed, by the company operating the site.
We use trusted service providers to host our systems and deliver notifications, such as cloud hosting providers and Google Firebase. They process data only on our instructions.
We do not sell this information or use it for advertising.
6. How long we keep it
- On the tablet: readings and photos are stored until our systems confirm they have been received, then removed from the tablet after 7 days.
- In Onnu's systems: readings and photos are kept as business and production records for as long as needed for the purposes above, including any record-keeping required by our contracts or by carbon verification standards.
7. Your rights
Under UK data protection law, operators can ask to see the personal information we hold about them, ask us to correct it, or object to how we use it. Because readings form part of operational and audit records, we may not always be able to delete them, but we will explain why. To make a request, contact us at the address above.
You can also complain to the UK Information Commissioner's Office (ico.org.uk).
8. Changes
We may update this policy. The latest version will always be at this page, with the date it was last updated.