Should be if law enforcement ever needs into it. The FBI would totally manufacture masks based off of your face.
I sure hope so. And have no problem with that. Provided...probable cause of a crime being committed has been articulated in a search warrant application specifying, the kind of information sought, which is then signed by a judge. The same as the FBI wanting to search your home, car, safe deposit box, workplace, etc looking for evidence to support a prosecution for a crime you are being accused of.
Without a search warrant the search would be illegal and any evidence collected would be inadmissible in a criminal trial. And I have no problem with that, either.