EA explains why the extra features of the 3DS aren't used in FIFA 12 3DS

A portion of an NWR interview with Producer Matt Prior…

NWR: Are there any plans to use other 3DS features (StreetPass, SpotPass, AR, gyroscope, etc.)? What kind of ideas do you have to use those features?

MP: We looked into all of these early in the development cycle, but with our first foray into FIFA on the 3DS we wanted to make sure we got the fundamentals right and focus on getting the core game solid, while at the same time innovating in key areas. We did this by developing a lot of content and modes, and revolutionizing the gameplay with unique 3DS features, which we have done with the addition of touch screen shooting. We wanted to focus on getting those things right and creating a very solid platform on which to build in the future. The exciting part about this is that there are still many 3DS features we can experiment with so yes, you can absolutely expect future features to utilize all the cool 3DS hardware.