Finland’s flagship airline has announced that it will be weighing passengers as well as their luggage. Finnair said the move, which will be done on a voluntary basis through May, is designed to improve balance calculations that will enhance flight safety. “Finnair will collect data by weighing volunteering customers and their carry-on baggage at the departure gate,” according to a statement from the company. “The weighing is voluntary and anonymous, and the data will only be used to optimize Finnair’s current aircraft balance calculations.” Finnair said that weighing passengers will help ensure that the airline doesn’t exceed the set maximum...