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Light has new capacity for electronics

In ‘Minority Report,’ the protagonist uses gloves that give him the power of virtual manipulation. The light seems to allow him to control the screen as if it were a touchscreen, but he’s touching nothing but air. That technology is still science fiction, but a new study may bring it closer to reality. Researchers report that they have discovered the photodielectric effect, which could lead to laser-controlled touch displays.

(via WSJ)