Southwest in the U.S. does this too, and you board in the order you checked in. This gives a real advantage to people on the 2nd or later leg of their trip, bec

Southwest in the U.S. does this too, and you board in the order you checked in. This gives a real advantage to people on the 2nd or later leg of their trip, because they can check in for all their flights 24 hours before the first one is scheduled to leave, whereas anybody whose first or only flight is this specific flight has to wait until 24 hours before this plane is scheduled to take off.