Unsanctioned Web Tracking

W3C TAG Finding 17 July 2015:

Finds that unsanctioned tracking is actively harmful to the Web, because it is not under the control of users and not transparent.

Believes that, because combatting fingerprinting is difficult, new Web specifications should take reasonable measures to avoid adding unneeded fingerprinting surface area. However, added surface area should not be a primary factor in determining whether to add a new feature.

Asserts that when a new feature does add fingerprinting surface area, it should be documented as such.

via Unsanctioned Web Tracking.