In August, the EU’s Home Affairs Commissioner Ylva Johansson gave a rousing speech about a soon-to-launch “smart” border system that would track the movements of hundreds of millions of travelers in and out of the bloc using fingerprints and facial recognition.“Soon, we will switch on the most modern digital border management system in the world,” said Johansson, announcing a Nov. 10 launch date for the so-called Entry/Exit System....