Super Cookie is a type of browser cookie which is inserted automatically into every HTTP request by the wireless carrier.
This tracker, included in your HTTP header is called Unique Identifier Header (UIDH). Information included in the UIDH request includes your device type, your browsing history and other details. Basically UIDH will help the wireless provider to track your activity and display ads based on your browsing.
Can I be anonymous Online ?
It can’t be seen or changed in the device’s browser settings. Deleting your browser cookie will not kill the inserted cookie (UIDH), because it is inserted automatically in every HTTP request. This allows third-party advertisers collect your web browsing habits without your consent.
Note: Not all wireless carrier inserts UIDH without user consent, check your provider for more details.