No, you cannot bring bags or any loose items on Revenge of the Mummy at Universal Studios. Because the ride is a high-speed "psychological" indoor roller coaster with sudden drops, sharp turns, and backwards motion, all loose belongings—including backpacks, purses, camera bags, and even large items in pockets—must be stowed before you enter the queue. Universal provides complimentary lockers located directly outside the attraction entrance for this purpose. These lockers are free for the duration of your ride and are operated by scanning your park ticket or a finger-print reader. Items that are small enough to be secured in a fanny pack (waist bag) with a three-prong buckle are usually the only exception and may be worn on the ride, but any larger bag that cannot be safely secured around your waist must be placed in a locker to prevent it from becoming a projectile or being lost during the experience.