Home · Method
One record, one reading, every output
Every page, the free check, the kit and the watch are rendered from one reviewed record. If a line on the site disagrees with the record, the record wins and the page is regenerated. The record carries a source pointer on every field.
The sources, in order of authority
- The official ISO record. Designation, stage, dates, page count, price and abstract. It is the only source for the record fields.
- ISO/IEC 27566-1:2025. The published framework, free from ISO. It supplies the terms, the indicators of confidence, the privacy and security objectives and the practice statement.
- The public working drafts. WG 5 N3927 for the framework text and N3928 for the analysis and benchmarking material. They are labelled as working drafts on every page.
- The DRCF and ICO measurement report. Independent research on measuring age assurance technologies, used for measurement practice and sampling.
- The BSI project timeline. One national body's dates for the same draft, labelled as such.
What we do not do
We do not state the DIS body, invent a clause number for it, treat a draft benchmark as a published requirement, or write a requirement from memory. Where the public record is silent, the field says so. Where a source is a working draft, the page says so. Where a figure could change before publication, the page says that too.
How the check works
The check is a rule over the record. It tests whether the task is a comparison, scores four evidence answers, places the decision date against the planning date and returns a verdict, three actions and the units to read. A blank or a past review date returns scope incomplete. The full rule is printed on the check page and is asserted by a regression table in the build.
Change
The record has a hash, the sitemap has a lastmod and every page carries the same date. The watch re-reads the sources, diffs them against the record and fails loudly on a change. The changelog records every change with its source and the page it affected.