Modern air travel is full of hassles, but one of the most arbitrary is the check-in. Why do I have to manually confirm that Im flying when Ive already paid for tickets and chosen seats? A few airlines around the world have eliminated that drudgery, but now its coming to a major American airline. Delta has updated its iOS app (theres no update for its Android equivalent yet) with automatic check-in — youll get your boarding passes 24 hours before takeoff. In theory, the days of f…Read more