Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for event ticket exchange. A method includes actions of: receiving ticket information for tickets that permit access to an event occurring at a venue, the ticket information indicating: a particular section of the venue to which the ticket permits access; and whether the ticket is available for exchange; generating rendering data that presents a graphical user interface (GUI) showing a map of the venue; receiving data representing a first input indicating selection of one or more sections of the venue; in response, generating updated rendering data that presents an updated GUI showing: the map of the venue; and a list of exchange options each including at least one ticket that is available for exchange; receiving data representing a second input indicating a selection of a first exchange option; and in response, executing the first exchange option.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for switching tickets between attendees during an event. The method may include the actions of receiving ticket information from multiple users attending an event, determining that tickets for a particular section are held by one or more of the multiple users, providing a switch offer to the particular user to switch a ticket of the particular user with a ticket held by one of the one or more of the multiple users, receiving a switch request for the switch offer, providing switch offers to each of the one or more of the multiple users, receiving an acceptance of the switch offer from a first user of the one or more of the multiple users, and providing an instruction to cancel the switch offers to other users of one or more of the multiple users.