
COLOGNE, Germany — The first day is always filled with a bit of confusion when finding your way into the Koelnmesse. I show my digital ticket to a member of the security staff, and he shouts at his colleague: “P?”

COLOGNE, Germany — The first day is always filled with a bit of confusion when finding your way into the Koelnmesse. I show my digital ticket to a member of the security staff, and he shouts at his colleague: “P?”