I was hoping for an airport security type of system like Universal uses but you carry your bag with you through the detector. In an 8 day trip I only made it through once without setting the thing off and having to get my bag pawed through. I was given different advice by different cast members of what to remove and apparently some of the sensors at the different parks are newer than others. In general anything aluminum (umbrellas, metal water bottles, cameras, eyeglasses) all has to come out.