No, in fact, precheck generally means you don't go through the AIT device and instead go through the metal detector. If you refuse to go through the metal detector (or if you set it off, or you are the 'zone 5' "random" person), you get a (hilariously perfunctory) patdown that they use to collect particles for the explosives test device. Nothing like the Freedom Grope™ in the plebe lanes.