Checking in 15 days in advance. Security.
With online check in you can print your boarding pass 15 days in advance. This means you can print your return boarding pass before you leave home.
Before printing your boarding pass you have to tick the box stating no one has tampered with your bag.
My question is how can anyone honestly tick the box that no one has tampered with their bag and proceed to printing their boarding pass? Has security screening at airports become so good that the requirement no longer exists?