Tickets are documents or digital codes that grant access to events, transportation, or services. They serve as proof of purchase and often include details such as the date, time, and location of the event or journey. Common types of tickets include those for concerts, movies, flights, and public transportation. Tickets can be purchased through various channels, including online platforms, box offices, and vending machines. They may come in different formats, such as paper tickets or electronic tickets stored on smartphones. Some tickets also have unique features like barcodes or QR codes for easy scanning and validation at entry points.