Picking out the top-10 tech advancements in the NFL over the years for Popular Mechanics was actually easier than I thought it would be. And, surprisingly, you quickly learn how many old rules haven’t been updated by teams that leave the sidelines in a technological darkness. From HDTV to iPad playbooks and from that fancy yellow line we see on TV to using nine different fabrics to construct a uniform, the list has a bit of everything for either tech or NFL fans. The advancements in camera and audio technology have also been surprisingly recent. Head over to PopMech.com and check it out.