Yesterday I coincidentally crossed paths with an informal meetup other drone flyers. I saw at least two GoPro cameras that were covered in copper. I forgot his name--might have been someone named Scott--said that it helps to reduce RF interference. The copper looked like a thin foil. "Scott" (sorry, I'm horrible with names) said that it is usually used in musical instruments. Has anyone seen or heard of using this copper foil on a GoPro? Are are any benefits?