Hey i was reading the article, and this is FUCKING with privacy! HAIR TESTS...they can see what chemical or herbal substances u been indulgining on by testing one peice of hair! all they need to do is check the chemical composition of it. This is as drugs create a chemical imbalance in your system that is shown in the hair. If u shave your hair off...they take your pub's, if that is gone, eye lash, if that is gone....beard...i mean they find something and fuck with your privacy... how messed up is that?!?!?