Would a tin box spark interest at security?

My parents are going to Disney tomorrow morning. My dad bought my mom some tickets to go to the show. Since the tickets are like a credit card, he bought a tin gift card holder to give it to her. He is taking that down with him and their bags are going to be carried on.

I was just wondering if security is going to look thru the bags because of it.

Sorry if this is a stupid question, I just don't want him to have the surprise ruined.

Thanks
Additional Details
He isn't carrying it, it will be in the luggage. It is really small, just big enough to hold some gift cards. Less than an inch think, about a half-inch and about four inches long or so.