Everyone make note of this day: the Riddler is born.

Similar to, "So, if I keep my cell phone on during take-off, I can interfere with the navigation system".

edit: Wow - why all the downvotes? It's the same kind of policy. Making your weakness "not allowed" is not fixing the weakness.

More like they can more easily match you with your face, or match one picture to another (e.g. if someone tries to request a passport with your picture, or request your passport with their picture).

it might still be able to identify you but not in real time.

throw in sunglasses and a hat and facial recognition should fail, at least that was still true in 2001 when John Cleese tested facial recognition in BBC's The Human Face series by David Attenborough.