Canesta ’s optical maser - projected practical keyboard is n’t even out yet , but there ’s already a company take up it up a notch with holographic computer keyboard that float in the air :
To help show his conception to potential licensee , Mr. McPheters has set up his laptop computer so that he can give a Powerpoint presentation without touching the computer , by punching his fingers into the air . Under his system , a holographical keypad begins with a holographic image of a substantial keypad , recorded by optical maser on photographic film . This image is hop on on a moldable home plate , which has infrared sensor behind it that can discover when the keypad is cook . When a light behind the plate is set off , the effigy appears to hover in front of it .
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