"I'd get to within a yard of that door you walk through and the thing would go mad. I used to carry an X-ray in my briefcase, to show them. But I had all the metal taken out"

In this quote, Barry Sheene is describing a circumstance where he would get near a door and something would trigger mayhem. He discusses that he used to carry an X-ray in his briefcase to show whoever was causing the turmoil, however he had all the metal gotten. This could imply that the X-ray was used to prove that he was not carrying any weapons or hazardous items, now that the metal has been removed, he no longer has that evidence. This could recommend that Sheene was frequently in scenarios where he was believed of carrying harmful products, and the removal of the metal was a preventive measure.