Quick analytics for built-in tracking protection

Tracking protection is still hard to measure accurately, because there are many different kinds. The Aloodo project can pick up everything, including lesser-known vintage tools such as AVG Crumble and even behavior-based tools like Privacy Badger that take a while to get trained and start blocking.

The biggest protection tools are the browser built-ins. Apple Safari has had Intelligent Tracking Prevention, and Mozilla Firefox is testing Enhanced Tracking Protection. We have added a quick test that should cover both of these. Now there is an onBlocked callback to take action when we can detect right away that a user has this form of protection because a third-party cookie won't persist.

Code: Add "cookie blocked" message · Aloodo/ad.aloodo.com@1915f0b