After taking the elevators down, and nodding in agreement with the comments tossed his way, John led the way to the first of at least two checkpoints that were in the Citadel that they would most likely see a lot of on their way to and from the Tower.  "Ok, it works the same way as the airlock back on the Dauntless, except this one is more for scanning for weapons and the like.  We had to beef up security due to some issues way back when, and the extra measures seemed to have cut down on a lot of crime, so it kind of stuck."  The checkpoint had a dozen guards around it at all times, as well as a number of camera bots, sensors, and the like through the narrow corridor, a force field protected security station on the left side of the checkpoint.  "All weapons and items of the like you can keep, but they will be picked up on and categorized all the same.  Even if the sensors can't identify them, we'll still at least like to look at them and put it into the computers manually if the need arises.  This is the galactic heart, and so it's part of my job to make sure it keeps going.  There is some incentive though, you all will be put into the database, given the full rights that all travelers get, and given a then thousand credit balance to spend as you wish.  Credits are the electronic form of money among us, all payments are done electronically, thus making it harder to steal and otherwise lose your money except through hacking perhaps.  Even that is hard to pull off though."