If they have cameras that can track people via facial recognition, then why would they need to track people via body scans?<p>If they really wanted to use body scans to track people, they&#x27;d arrange the checkpoints so the body scanner is the first place you go after they scan your boarding pass and&#x2F;or ID. And when questioned about why they rearranged the checkpoints that way they&#x27;d just say &quot;TSA security evolves to counter ever changing security threats, and we can&#x27;t speak specifically about what prompted this reconfiguration.&quot; End of story since security theater is not to be questioned.