The technology sounds feasible, and if effective it would eliminate the perceived need for much of the personally invasive methodology currently in use.
Nonetheless, I still have great difficulty reconciling two things. First is this quote from the article:
In other words, these portable, incredibly precise molecular-level scanning devices will be cascading lasers across your body as you walk from the bathroom to the soda machine at the airport and instantly reporting and storing a detailed breakdown of your person, in search of certain "molecular tags".
The second is this one from another source:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
It is impossible to make both of them applicable at the same time.