Privacy on numbersinkorean.com
Updated 8 October 2026
numbersinkorean.com is published by Digital Signet, a UK company. This page lists the measurement and browser storage the site uses, so you can check it against what loads. The policy that covers the whole Digital Signet portfolio, including your data-protection rights and how to use them, is at digitalsignet.com/legal/privacy.
Analytics
Google Analytics 4 (measurement ID G-DGBC84QKFD) loads on every page with IP anonymisation switched on. It sets Google Analytics cookies and tells us which pages are read and which ranges, exercises and number systems the worksheet generator is used for. It is not used to build advertising audiences and is not linked to any advertising product.
Worksheets and the shelf
The worksheet generator runs in your browser and works without sending anything anywhere. If you press Keep this sheet, the recipe for that sheet (the number range, exercise type, number system, question count, your optional school or class name and a random seed, about a hundred characters) is stored on a small service we run, so the same sheet and its answer key can be opened again from its address. Your device keeps a key to your shelf in localStorage under nik-shelf-key. There is no account and no password.
If you ask for your shelf by email, we store that address with the shelf and send you a single-use link that works for seven days. The email goes through Microsoft Azure Communication Services and we send nothing else to that address. We store nothing about students: a kept sheet is a recipe, not a filled-in page.
To remove everything, open your shelf and choose Delete the shelf and every sheet on it; that deletes the recipes, the email address and the keys together. Kept sheets that nobody deletes are retained while the service runs; sheets that are not kept are not stored.
The shelf is not switched on yet on this site. The Keep button appears once the service runs here, and this section describes how it works when it does.
The number reader and the age tool
The number reader, the age tool and the generator work out their answers in your browser. What you type into them is not sent to us.
No advertising
No advertising network runs on this site: no ad tag, no retargeting pixel and no third-party ad frame. If that changes, this page changes first.
Links out
Pages link to the sources they rely on, such as the National Institute of Korean Language. Those are plain links with no tracking parameter; once you follow one, that site’s own policy applies. The portfolio cookie policy, terms and accessibility statement sit beside the privacy policy.