Self-service check-in is a process that allows travelers to check in for their flights without needing assistance from airline staff. This can be done through kiosks at the airport or via mobile apps. Passengers can enter their booking information, select seats, and print boarding passes independently, making the process quicker and more convenient. This system is commonly used by major airlines like Delta and American Airlines. It helps reduce long lines at check-in counters, allowing travelers to proceed directly to security and boarding. Self-service check-in is part of a broader trend towards automation in the travel industry.