expressions

 Security at airports has become so tight that soon they may not allow us to carry our facial expressions on board. Officers at airports now observe travellers' facial expressions, body and eye movements, changes in vocal pitch and other indicators of stress or disorientation.So if you are a part of a dance troupe or a sports team trying to get in some neck exercises while you wait, my advise is: desist. Look straight ahead, don't move, and keep your voice at a low pitch. Remember a time when these were the very indicators of stress and disorientation? One generation's guilt is another generation's innocence.
  Behaviour Detection Officers(BDOs) don't look for guns or bombs; instead they are trained to look into your soul and detect signs of evil intent. If they look really hard they might even be able to tell you what you had for breakfast ten years ago to the day or the amount on the parking ticket you refused to pay,
  What if bad men take courses in behaviour detection too? They could look out of their cars at traffic signals and tell at a glance whether the driver of the vehicle nearby is smiling because a) he has caught you digging your nose b)he is cheating on his wife or c) he has just remembered the item song involving Katrina Kaif's hip moves.
  Like nuclear energy, the technique could be put to good use too. Imagine walking into a restaurant and a waiter bringing you exactly what you wanted after one look at your face. Or books at a large store jumping out of the shelves and lining in a neat pile around you because the salesperson could tell at a glance what your interests are.
  Laugh and the world laughs at you. Cry and you get arrested for poor facial expression.