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DEF CON will always be a cash-at-the-door conference. We will always honor the LineCon. This is the way. Preregistration guarantees you'll receive a DEF CON 33 Human badge (as opposed to a paper badge, if we run out) when redeeming your ticket in Las Vegas. Badges must be picked up onsite. The fine printDEF CON 33 preregistration ends August 1st at 8:59pm EST.Tickets are transferable. NOTE: ANYONE MAY REDEEM THE TICKET Ticket Pricing is as Follows: Early-        $540            Early price ends May 23 @ 8:59pm EST                                                                                                                                                                                            Regular-    $560           Regular price ends July 18 @ 8:59pm EST                                                                                                                                                                                        Late-          $580           Late price ends Aug 1 @ 8:59pm EST                                                                The fee to cancel/refund a ticket before July 18, 2025, is $34.00. The fee to cancel/refund after July 18, 2025, is $84.00. For ticket or billing questions, simply email us. Upon purchase, the ticket will be emailed to the email address provided. PLEASE MAKE SURE YOUR EMAIL ADDRESS IS CORRECT. We cannot change it after the ticket is emailed. By purchasing this ticket, you agree to abide by the DEF CON Code of Conduct and the registration terms and conditions listed above.