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crwdns2933797:0Evan Noronhacrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Evan Noronha

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-[* black] Time for some Science with iFixit!
+[* black] Time for some ***Science with iFixit***!
[* black] Just how does the Fire Phone know where your face is in relation to the phone and create that fancy 3D effect?
[* black] There are four [http://en.wikipedia.org/wiki/Infrared|IR] projectors, one near each corner of the phone. They're blasting you with invisible (to the human eye) infrared rays any time you're staring at the phone while the display is on.
[* black] There are also four IR cameras capturing this information—one at every corner of the phone.
[* black] The Fire Phone ~~triangulates~~ rectangulates your position, figures out that there's a human face looking at the display, and starts working its wonderful juju magic—all in real time.