The online ticketing system is a system for selling tickets via the Internet and websites.

The system is intended to be separate or part of another system, usually paired with system inputs and outputs, and video surveillance. It is done for the purpose of selling tickets for sports events in sports halls, stadiums, swimming pools, gyms, concerts, conferences, exhibitions, museums, etc.

Mobile application for online purchase of tickets with an issued QR code. The issued ticket is sent to the user's email address, or if he is registered and has a mobile application, the ticket can be saved in the mobile application. With the purchased card, QR code, the visitor can register and enter a certain event.