<SARCASM>

Thank goodness our government is looking out for me, and making sure I don’t have to sit next to some horrible pot-smoker!  They might steal my peanuts!

</SARCASM>

On a more serious note, however, I don’t know that things like this are preventable, in the long run.  We are turning into an information society, and more and more information about you is going to be available, legally or illegally.  Probably the best we can do is put laws and controls in place to mitigate the negative effects of this information explosion on you and your rights.