An electronic eye can read random patterns in a person's iris.

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Both models include 270-degree swivel 921k-dot touch-enabled TruBlack LCDs and XGA OLED eye-level electronic viewfinders, along with Sony's new Multi Interface Shoe, which enables XLR microphone inputs through an optional accessory.

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The camera also includes a new Direct Setting Control that enables quick access to settings in manual exposure modes (P, S, A, M), so that settings can be changed without taking an eye off the electronic viewfinder or the high-resolution 921, 000-dot 3.0-in LCD display.

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It sounds unbelievable, but the technology actually relies on understood phenomena, exploiting the electrical signals produced by the brain as well as eye movement to control electronic devices.

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With a choice of using either the Electronic Viewfinder (EVF) with eye sensor, or the high resolution, 3.0-inch free-angle LCD to compose your shots and movies, you can capture the moment as the situation demands.

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Regardless, this is further evidence that the electronic textbook market is one to keep an eye on -- if only someone could figure out how to do it right.

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Only up close can you see that he speaks by using those eye pupils to guide a cursor across an electronic keyboard.

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