Everything about you will be written all over your face. Via Gizmodo:
Within the next year or two, the U.S. Department of Homeland Security will instantly know everything about your body, clothes, and luggage with a new laser-based molecular scanner fired from 164 feet (50 meters) away. From traces of drugs or gun powder on your clothes to what you had for breakfast to the adrenaline level in your body.
According to the undersecretary for science and technology of the Department of Homeland Security, you might start seeing [these scanners] in airports as soon as 2013.
And, since it’s extremely portable, will this technology extend beyone the airport or border crossings and into police cars, with officers looking for people on the street with increased levels of adrenaline in their system to detain in order to prevent potential violent outbursts? And will your car be scanned at stoplights for any trace amounts of suspicious substances? Would all this information be recorded anywhere?