Unfortunately for Vera, she had just taken one of the chocolate frog cards being passed around as the alarm sounded, which caused a delay in reaching up to cover her ears which was an entirely necessary reaction given just how loud these particular devices were. Personally? She'd prefer not to have one for herself. However, they'd be pretty fun to say... give Vasco one or two hidden in his room at home. With a prank like that, they'd go off anytime she was near, yes? Something to ruminate on for later.

Y'know, when her ears weren't ringing.

Right, moving on though now. Foe glasses? Vera listened to the third year give his answer, nodding in agreement but deciding to once more expand on the answer. She raised her hand and waited to be called on. "While it could be used to identify who your enemies are, once they're 'close' and actual faces and not just, it also kind of gives a warning of how much danger you're in. The more unclear your enemy is, the further they still are. But as you can see more details of the person, then it's also known that they're closing in on you, so to speak." Though she didn't really know what the baseline was for 'danger' or how that worked.

Having offered an answer, she quickly took a look over the chocolate frog card before passing it on behind her to the next person as well.