The definition, in our words
A quantitative, qualitative or descriptive measure of how correctly and accurately an age assurance attribute can be said to relate to a person.
Why the distinction matters
The framework sets five core indicators, from asserted to strict. It does not fix their technical characteristics, and it invites policy makers to subdivide them for a use case.
How to use it in a comparison
Name the indicator in the comparison brief and in the report. An accuracy figure without its indicator cannot be read by a procurement panel or a regulator.
Where it changes the evidence
A definition is not decoration. It decides which test is meaningful and which result can be compared. Where a supplier's material uses the term differently, the comparison should quote the supplier's use and place it beside this one. A difference in definition is a finding about comparability, and it belongs in the report rather than in a footnote.
The analysis units on this site use the term as the framework defines it. Where a unit turns the term into a question, the question is written on the unit page and the evidence artefact is named. The kit repeats both, so a row in the register and a paragraph in the report use the same meaning.
Source for this page
- ISO/IEC 27566-3 official record. The public record of the draft.
- ISO/IEC 27566-1:2025 official record. The published framework, free from ISO.
Retrieved 2026-10-21. This is our statement of the term, not a reproduction of the published definition.