The U.S. government approved new technology that scans footwear—without their removal—for bombs, The Wall Street Journal reports. But the new machines will be available only to travelers who pay to join the Clear Registered Traveler program, at least at first. The shoe-scanner approval will give a boost to the program, which is designed to provide faster airport security screening, via a special security line, to travelers who sign up in advance and undergo a background check.
