Ticket object is a method to allow and log time limited access to a Connection.
Ticket references a Connection and has a time limit, defined by time when ticket was created and it's validity period.
Tickets with expired validity are deleted automatically.
Each Ticket has an Author (who created a ticket) and User (who can use a ticket).
Sharing
User can share a Ticket with another user. In this case tickets share guacd session which means they see the same view and if control is allowed - use session simultaneously. Read more about ticket sharing