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第二篇Eye-tracker Lots You Drag and Drop Files with a Glance

Bored of using a mouse? Soon you'll be ableto change stuff on your computer screen – and then moveit directly onto your smartphone or tablet(平板電腦) –with nothing more than a glance.

A system called EyeDrop uses a head-mountedeye tracker that simultaneously records your field of view so it knows whereyou are looking on the screen. Gazing at an object – aphoto, say – and then pressing a key, selects thatobject. It can then be moved from the screen to a tablet or smartphone just byglancing at the second device, as long as the two are connected wirelessly.

"The beauty of using gaze to supportthis is that our eyes naturally focus on content that we want to acquire,"says Jayson Turner, who developed the system with colleagues at LancasterUniversity, UK.

Turner believes EyeDrop would be useful totransfer an interactive map or contact information from a public display toyour smartphone or for sharing photos.

A button needs to be used to select theobject you are looking at otherwise you end up with the "Midastouch"(點(diǎn)石成金) effect, whereby everything you lookat gets selected by your gaze, says Turner. "Imagine if your mouse clickedon everything it pointed at," he says.

Christian Holz, a researcher inhuman-computer interaction at Yahoo Labs in Sunnyvale, California, says thesystem is a nice take on getting round this fundamental problem of usinggaze-tracking to interact. "EyeDrop solves this in a slick (靈巧的)way by combining it with input on the touch devices we carry withus most of the time anyway and using touch input as a clutchingmechanism," he says. "This now allows users to seamlessly(無(wú)縫地) interact across devices far and close in a very naturalmanner."

While current eye-trackers are rather bulky,mainstream consumer devices are not too far away. Swedish firm Tobii isdeveloping gaze-tracking technology that can be installed in laptops andtablets and is expected to be available to buy next year. And the Google Glassheadset is expected to include eye-tracking in the future.

Turner says he has also looked at how contentcan be cut and pasted or drag-and-dropped using a mix of gaze and taps on atouchscreen. The system was presented at the Conference on Mobile andUbiquitous Multimedia in Sweden, last week.

36. The eye-tracker technology enables usto______

A. change our computer screen.

B. focus on anything that interests us.

C. get a smartphone connected wirelessly.

D. move an object from screen with a glance.

37. Why is a button needed?

A. To minimize the cost of EyeDrop.

B. To choose as many objects as possible.

C. To make EyeDrop different from others.

D. To select what we want.

38. The word “this” in Paragraph 6 refers to_______

A. application of gaze-tracking inhuman-computer interaction.

B. interaction between human and computer.

C. combination of gaze-tracking with input ontouch devices.

D. generalization of EyeDrop system.

39. Which of the following statement is trueof eye-trackers for consumer devices.

A. They are costly.

B. They are available.

C. They are installed in Google Glassheadset.

D. They are expected to come out soon.

40. What is Turner likely to study next?

A. How to drag and drop with gaze and taps.

B. How to present the system in public.

C. How to get touch screen involved.

D. How to cut and paste content from a publicdisplay.

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