[Samsung included eye-gesture features in the new Galaxy S4 translating eye movements into smartphone actions. LG plans to add eye-recognition to its Optimus G Pro, setting the stage for a patent showdown between the two companies.]

Lance Whitney -- "Samsung and LG Electronics could find themselves in another patent squabble, this time over eye-tracking technology.

Samsung's Galaxy S4 and LG's Optimus G Pro both will offer an eye-recognition feature that automatically reacts to the movement of the user's eyes."

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