Only those who have paid airline tickets will be allowed to pass through airport security checkpoints. When going through the screening process, travelers are required to show proof of airline ticket purchase. Proof can include a printed ticket from the airline or travel agent or an online ticket printout.
Photo identification is required to pass through all security checkpoints. Proof can include a state-approved ID, U.S. passport, driver's license or military ID. Those passengers under 18 years old without a photo ID may be asked for an alternative form of ID, which can include a birth certificate.
If you have a medical condition requiring medicine which needs to be administered by a needle, ensure that you have the proper medical paperwork with you. Prior to having your carry-on bags scanned, inform those working the security checkpoint. Medical paperwork may also be needed if you have a metal device implanted in your body, use controlled substances or require the use of oxygen.