The country’s first full-body scanning machine has been installed in the Phoenix airport. Used in secondary screening, it automatically looks through passengers’ clothing for guns and explosives. If the phone booth-size thing works out, it will soon appear in New York, L.A., and other airports. [Note to younger readers: a “phone booth” is where folks used to go to have the private conversations we no longer have.] Some people are fine with the new machine, enjoying the illusion of increased security. But others, of course, feel upset that the people operating the machines can “see” their bodies. According to The…