Nope. This is on my Xperia Z1 Compact. It doesn't affect my game controls (able to play normally), or at least I don't think so. But it's there so it must be something haha.
I'm just curious the Asphalt FAQ/KB doesn't have it and any Google search only returns a definition relating to cameras.
Quite surprised the definition of a compound word made of very simple words is hard to find.