Definition
A 'check-in' is the act of reporting your arrival at a location, like a hotel or airport ✈️. It's a formal process ensuring everyone knows you're present. Think of it like RSVP'ing in person. It confirms your reservation and grants access. Unlike just showing up, a check-in involves providing information or receiving instructions. It's a starting point, like beginning a game🎮, where you officially enter the system.