One of the problems involved in voting with an uncovered face is the following. A person may present a letter from a centre attesting to his address and a provincial health insurance card. However, in New Brunswick, there is no photograph on that card. Even if someone has a bag on his head, you have to identify him. We can't ask someone who receives these people to know everyone who appears before him. If the person has no photo to show, whether or not that person has a piece of identification, it doesn't change much if you can't see the person's face.
In addition, you don't see the faces of people who vote by mail. That was your argument. If someone wants to walk around with a bag on his head, that's his problem. That doesn't change the vote. He can be at home and vote by mail with a bag on his head. We don't know that.