A digital boarding pass is an electronic version of a traditional paper boarding pass used by travelers when flying. It can be accessed through a smartphone app or email, allowing passengers to check in for their flight and receive their boarding information without needing a physical ticket. This convenient option is often provided by airlines like Delta or American Airlines and can include a QR code or barcode for scanning at security and boarding gates. Digital boarding passes help reduce paper waste and streamline the check-in process, making travel more efficient for passengers.