I usually try a preemptive strike by finding the hidden security "eye in the sky", then commencing my over the top performance of adjusting the luggage that would make any baseball player proud. This is followed by the serious business of aggressive mining for nasal gold, and concluded with the brazen, inside of the pants scratching of the ass.
After completion of my performance, I've found the security detail allows me to shop in peace.
These are good tips worth remembering! :O)