Yes, in one of the episodes where Archer is being questioned by the reptilian Xindi, he has some kind of proof about the future (I can't remember exactly) and tells one of the Xindi to check his pocket for it (Archer's hands are tied up, so he can't grab it himself)

The only reason I remember that scene, is because the Xindi unzips the pocket on Archer's arm, as if he knew exactly which pocket Archer was talking about... and I'm thinking, "why the hell would you assume the little arm pocket would be the one to check first?"