Yep, you missed. It’s double sided foam tape. The metal disk is not magnetic. The base of the camera is magnetic. The idea is to use the foam tape to attach the metal disk to a wall, desk, ceiling, etc. Then attach the camera to the metal disk with the magnet in the camera base. Obviously if the camera will go onto something metal, you don’t need to use it. For example one of my cameras is attached to the metal end of a 4 tube florescent light fixture, and another is sitting on top of the steel electrical sub-panel in my garage. Neither of those required the foam tape or metal disk. The one that is used as a dashcam in my pickup truck has the disk attached to the windshield behind the rear view mirror with the foam tape. The camera is magnetically attached to the disk.