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  3. Two new gesture-sensing innovations designed for large electronic screens in public places herald(预告)a future in which everythin

Two new gesture-sensing innovations designed for large electronic screens in public places herald(预告)a future in which everythin

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问题     Two new gesture-sensing innovations designed for large electronic screens in public places herald(预告)a future in which everything from street art to advertisements track your movements, are fully interactive, and almost impossible to ignore.
    Giant flat-screen displays powered by organic LEDs(OLEDs)are plunging in price, so screens tens of meters long could soon line urban corridors. Rather than have them simply fire messages at a tuned-out public, researchers at the Technical University of Berlin(TUB)in Germany have built two applications that they hope will attract passers-by and inspire a new wave of interactive displays.
    "We believe that in the future all surfaces in urban areas could be interactive displays," says team member Robert Walter. " This presents great opportunities and challenges as it will need to be attractive and work in an intelligent way. " The researchers will reveal their first two street-smart applications—StrikeAPose and Screenfinity—next month in Paris, France. They believe that while advertising could provide the impetus(推动)for the adoption of the technology, non-commercial apps will also appear—courtesy of artists or poets, perhaps.
    StrikeAPose, developed by Walter’s team, lets a person in the street perform a unique gesture to take control of anything from a bus-shelter advertisement screen to a large, Times-Square-style video wall. Once you are registered as the screen controller, software fed by the depth cameras used in Microsoft’s Kinect system lets you control, say, a gesture-driven game. In trials in a university cafeteria, the team settled on a registration gesture they call The Teapot; users put their hands on both hips, their arms describing the profile of two teapot handles. This was the most robust gesture, even when obfuscated(使模糊)by thick clothing.
    Screenfinity, led by Jorg Muller, generates content for large, long screens that follows the viewer as they walk along beside it. The system monitors passers-by with 10 Kinect cameras placed along the length of a screen. As a person approaches, text or pictures pop up and slide along in sync(同步)with their walking. If someone moves further away, the text gets bigger; closer, and it gets smaller, so it is equally legible all the time. In a recent trial on the TUB campus, cafe menus were displayed in a bustling square. Not only were people able to read the menus at varying distances and without breaking stride, the display proved so attention-grabbing that it had users looking behind the screen to see if a person was tracking them.
    Simon Parnall of News Digital Systems in Staines, UK, is developing floor-to-ceiling TV screens. StrikeAPose is user-friendly, he notes, since people only need simple gestures to interact with it. But he wonders how many people will want to " perform a potentially embarrassing gesture in a public space in order to interact". He foresees organizations like the London Underground making strong use of Screenfinity, however, as it will allow ads to move down the escalators, tethered(用绳子拴住)to specific commuters.
What is TRUE about the new gesture-sensing innovations?
选项 A、They enable large electronic screens in public places to interact with people.
B、They make it possible for people to track everything in public places.
C、They can fully interact with everything from street art to advertisements.
D、They make it possible for people to interact with each other.
答案A
解析 由题干关键词new gesture-sensing innovations定位到第一段。根据该段可知，“动作感应软件预示着未来的发展趋势，从街头艺术到商品广告的所有东西都将可以追踪人们的动作，与人们充分互动”。因此A)“这些动作感应新技术可以使公共场所的大型电子显示屏与人们进行互动交流”与文意相符，故为答案。
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