An e-ticket (electronic ticket) for a bus is a digital version of a traditional paper ticket that serves as your proof of payment and reservation. When you book a bus journey online or through an app, the provider generates a digital pass—often containing a QR code or barcode—and sends it to your email or stores it in your account. This e-ticket includes all vital travel details, such as the passenger's name, departure time, seat number, and boarding gate. To use it, you simply display the ticket on your smartphone or tablet to the driver or gate agent, who will scan it to verify your booking. E-tickets are highly convenient as they eliminate the risk of losing a physical slip of paper and allow for easy last-minute changes or refunds through digital platforms. In 2026, they are the industry standard for major carriers like FlixBus and Greyhound, helping to speed up the boarding process and reduce the environmental impact of printing millions of paper tickets every year.