Originally Posted by Often1

Pretty much any security check worldwide, not just at airports, which involves this level or greater, has the subject turn their palms up to assure that there is nothing in their hand, including stuck to it. If you can't physically do that or you can do it but it hurts, just say so. Officers will either ignore it or look under the hand. Just takes a bit longer.which may or may not delay you and the person behind you waiting for the Officer.