[1] Tracking Compliance and Scope () https://www.w3.org/TR/2019/NOTE-tracking-compliance-20190122/#dfn-tracking
[2] Tracking Preference Expression (DNT) () https://www.w3.org/TR/2019/NOTE-tracking-dnt-20190117/#dfn-tracking
[3] WebKit Tracking Prevention Policy | WebKit () https://webkit.org/tracking-prevention-policy/
[4] Announcing the WebKit Tracking Prevention Policy | WebKit () https://webkit.org/blog/9507/announcing-the-webkit-tracking-prevention-policy/
[5] Security/Anti tracking policy - MozillaWiki () https://wiki.mozilla.org/Security/Anti_tracking_policy