Smith says it's the first observer-based concussion app.
"It doesn't take a rocket scientist to figure out if (you have) a concussion, you're probably damaging your brain a little bit. Just like if you sprain your wrist a bunch, you're going to have some wrist problems down the road. Yeah, I'd still play through it. It's part of it. It's part of the game," Smith said. "I think if you're noticeably messed up, yeah, they'll take you out. But if you've just got some blurry vision, I'd say that's the player's call. And most guys _ 99 percent of guys in the NFL _ are going to play through it."