Here's the page on the TSA's own website confirming you have the right to opt out of the facial recognition scan.
Bring this with you next time you fly so you can tell them to fuck off if they give you a hard time.


U.S. Department of Homeland Security Transportation Security Administration
Facial Comparison Technology | Transportation Security Administration
TSA introduced facial comparison technology into the screening process at select airports. The facial comparison technology represents a significan...