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1

It asks first

Nothing that measures a visitor runs until they have chosen. The banner is the gate, not a notice posted after the fact.

2

It reads the real site

A scanner goes over the site and reports what it actually sets, so the list a visitor reads describes that site rather than a template. It re-scans on a schedule, because sites change.

3

It publishes the policy

The privacy and cookie pages are generated from what the scan found and served at their own address, which is what the banner links to. One source, so the page and the banner cannot drift apart.

4

It keeps the record

Every answer is recorded as it is given, so a choice can be shown later rather than assumed.