They can't. The website may very well do the opposite of the preference DNT signals. Meanwhile, proving in a court of law that the tracking still happens will be hard.
Services should be denied the capacity to track and fingerprint, not just told about a preference against it.
DNT will always be an "evil bit", regardless of any law behind it.
> They can't. The website may very well do the opposite of the preference DNT signals. Meanwhile, proving in a court of law that the tracking still happens will be hard.
Its not hard when it comes to any website of note, large companies can't easily hide what their computers are doing really, if they have code that tracks people it is gonna be found.
Services should be denied the capacity to track and fingerprint, not just told about a preference against it.
DNT will always be an "evil bit", regardless of any law behind it.