The check-in process is the procedure travelers follow upon arriving at an airport or hotel. For flights, it typically involves confirming your reservation, receiving a boarding pass, and checking any luggage. This can be done online, at a self-service kiosk, or at a check-in counter. In hotels, the check-in process includes providing identification, confirming your reservation details, and receiving your room key. This process ensures that guests are properly registered and can access their accommodations. Both processes aim to streamline arrivals and enhance the overall travel experience.