If I Change the Tracking Code, Will I Lose Old Data With Google Analytics?. Google Analytics tracking codes are connected to the specific Analytics account under which they are stored. This poses ...

Rising says doctors, hospitals and insurers will be able to add the codes to patients' medical records, helping them to quickly identify people who have received problematic implants and devices.

AT&T Mobility said it would no longer add tracking codes to its subscribers' devices. That practice made it nearly impossible to keep a user's identity private on the Internet.