chimney that will announce to the world whether there is a new pope placed atop the treasured 500-year-old sistine chapel. it is delicate work. upholding a tradition where white smoke billowing from the chimney signals a new pope has been named. >> last thing they want for the sistine chapel to turn into a smoke-filled room worth where michelangelo applied his hand. it does take time for the smoke to go from white to black. >> one of the bits of drama is the catholic church is imminently predictable events prize. you know what will happen and when. but when the conclave in a sense all bets are off. >> reporter: the conclave, their decision shrouded in secrecy and tradition and some modern twists. electronic jamming equipment ensures no one inside or outside