ISO 27566-3 Revision Checker
ISO/IEC DIS 27566-3stage 40.20ballot closes 4 December 2026planning date 14 September 2027

All defined terms · Terms relating to age assurance

3.9

age inference

An age assurance attribute derived from information that indirectly implies a person is over or under an age.

Framework ISO/IEC 27566-1:2025Clause 3.9Status published

The definition, in our words

An age assurance attribute derived from information that indirectly implies a person is over or under an age.

Why the distinction matters

A marriage certificate, a school record or a parental attestation can imply age without stating it. The inference is only as strong as the validity of the credential and the rule that links it to the age.

How to use it in a comparison

Record the rule that turns the credential into an age statement, and test the credential's validity separately. A valid document can still support a weak inference.

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

Retrieved 2026-10-21. This is our statement of the term, not a reproduction of the published definition.