What happens when you scan a code
Last updated 17 October 2026
When you scan a QR code made with LinkLeafQR, your phone briefly visits our server and we send it on to wherever the code’s owner has chosen. While that happens, we record a small amount of information so the owner can see how their code is performing. We don’t identify you, we don’t set cookies, and we don’t track you across codes, websites or days.
What we record
| Recorded | Example |
|---|---|
| When the code was scanned | Sat 17 Oct, 12:41 |
| Approximate area, worked out from your network (never GPS) | Aylesbury, England, HP19 |
| Type of device and software | Mobile, Samsung Galaxy S24, Android 15, Chrome |
| Your phone’s language setting | en-GB |
| The website that sent you, if any (domain only) | instagram.com |
| An anonymous code that changes every day, so the owner can count unique scans | Can’t be linked to you or to other days |
We never store your IP address. It’s used for a moment to estimate your area and is then discarded. The secret used for the daily code is deleted after two days.
If you fill in a form
Some codes show an optional form before continuing. Anything you enter there is shared with the owner of the code, only if you tick the box to agree. You can always choose “Skip and continue” instead.
Who is responsible
The business or person who made the QR code decides how the scan information is used. They are the “controller”. LinkLeafQR stores it on their behalf as a “processor”, under a data processing agreement. Our legal basis is the owner’s legitimate interest in understanding how their printed materials are used. We keep this to the minimum needed.
How long it’s kept
- Scan details: up to 25 months, so owners can compare this year with last.
- Raw browser information: deleted after 30 days. Only the summary (such as “Android, Chrome”) is kept.
- Form entries: until the owner deletes them, or their account closes.
Your rights
Because scan records can’t be linked to you, we usually can’t find “your” scans. If you filled in a form, contact the code’s owner, or email support@linkleafqr.com and we’ll help. You can also complain to the Information Commissioner’s Office at ico.org.uk.
Report a problem code
If a code sent you somewhere suspicious, email support@linkleafqr.com with the address you landed on.