Oh, BIG SIS, what a spendthrift you turned out to be!
Here's my suggestion. Bloodhounds. Big, beautiful, droolly, sharp-nosed, non-lethal, non-cancer causing Bloodhounds. Kept as pets by their handlers, they will do anything for a pat on the head,
a kiss from a stranger, even. Fondle their silken ears.
They will find anything you train them for. You can get rid of the x-rays, get rid of the sex perverts, just send the queue of people between two lines of gorgeous BLOODHOUNDS - passenger friendly, kid friendly, and we will shut up.