Building upon its wide expertise in the tablet space, Amazon has unveiled its first smartphone today. So yes, all those rumors were true after all. It’s called the Amazon Fire Phone and its main selling points are bound to be Amazon’s reach in terms of content services, as well as the unique 3D UI dubbed Dynamic Perspective. This much talked about feature changes what’s depicted on the screen depending on where you are in relation to the phone. It accomplishes this by tracking your eyes with four specialized cameras that are located in the front corners of the handset. You can see it in action in this, rather quiet, video. Dynamic Perspective ties in nicely with tilt gestures that allow you to initiate actions by simply moving the phone. For example, you can tilt the device to scroll inside the browser, something eerily reminiscent of Samsung’s Smart Scroll feature. And the same thing works inside ebooks, and even games. More here: