Check-in services are processes that allow travelers to confirm their arrival for a flight, hotel stay, or event. This service typically involves providing identification and travel details, which helps streamline the boarding or accommodation process. Many airlines and hotels now offer online check-in options, allowing customers to complete this step before arriving at the location. These services enhance efficiency and reduce wait times at airports and hotels. For example, airlines may allow passengers to select seats and print boarding passes in advance, while hotels may enable guests to choose room preferences. Overall, check-in services improve the travel experience.