This week was Intel usual time to shine at the annual IDF and, unsurprisingly, it revealed a great many things. It even had a Tango smartphone (with a NERF gun!) to show off. Now, if you've been watching the mobile industry for quite some time now, you'd know that "Intel" and "smartphone" don't usually go in the same sentence. Of course, the RealSense Tango smartphone is primarily a developer's toy, but this still makes us ask the big questions. Has Intel finally caught up with its rivals in the mobile space? Or will it be forever trailing behind?