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Why eye-tracking is needed for the better optimization of a website?

Eye-tracking is used for the better optimization of many website

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According to latest case-studies I will suggest eye-tracking as it is the process of sensing the activities of the eyes. Researches on eye tracking have been really significant for web publishers to determine the behaviour of the user. This helps the website owners to provide what exactly the users need. As I read it form a blog in Credible Reasons to Say That Eye Tracking is Essential for Web Publishers

Posted on Apr 15, 2015

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Posted on Jan 02, 2017

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I went to one eye laser clinic and they told me I was not a suitable candidate for corrective eye surgery. Should I give up or is it ok to shop around for a second opinion?


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What is Blue eye technology?


1.
A researcher at Stanford has created an alternative to the mouse that allows a person using a computer to click links, highlight text, and scroll simply by looking at the screen and tapping a key on the keyboard. By using standard eye-tracking hardware--a specialized computer screen with a high-definition camera and infrared lights--Manu Kumar, a doctoral student who works with computer-science professor Terry Winograd, has developed a novel user interface that is easy to operate. "Eye-tracking technology was developed for disabled users," Kumar explains, "but the work that we're doing here is trying to get it to a point where it becomes more useful for able-bodied users." He says that nondisabled users tend to have a higher standard for easy-to-use interfaces, and previously, eye-tracking technology that disabled people use hasn't appealed to them.
At the heart of Kumar's technology is software called EyePoint that works with standard eye-tracking hardware. The software uses an approach that requires that a person look at a Web link, for instance, and hold a "hot key" on the keyboard (usually found on the number pad on the right) as she is looking. The area of the screen that's being looked at becomes magnified. Then, the person pinpoints her focus within the magnified region and releases the hot key, effectively clicking through to the link.
Kumar's approach could take eye-tracking user interfaces in the right direction. Instead of designing a common type of gaze-based interface that is controlled completely by the eyes--for instance, a system in which a user gazes at a given link, then blinks in order to click through--he has involved the hand, which makes the interaction more natural. "He's got the right idea to let the eye augment the hand," says Robert Jacob, professor of computer science at Tufts University, in Medford, MA.
Rudimentary eye-tracking technology dates back to the early 1900s. Using photographic film, researchers captured reflected light from subjects' eyes and used the information to study how people read and look at pictures. But today's technology involves a high-resolution camera and a series of infrared light-emitting diodes. This hardware is embedded into the bezel of expensive monitors; the one Kumar uses cost $25,000. The camera picks up the movement of the pupil and the reflection of the infrared light off the cornea, which is used as a reference point because it doesn't move.
Even the best eye tracker isn't perfect, however. "The eye is not really very stable," says Kumar. Even when a person is fixated on a point, the pupil jitters. So he wrote an algorithm that allows the computer to smooth out the eye jitters in real time. The rest of the research, says Kumar, involves studying how people look at a screen and figuring out a way to build an interface that "does not overload the visual channel." In other words, he wanted to make its use feel natural to the user.
One of the important features of the interface, says Kumar, is that it works without a person needing to control a cursor. Unlike the mouse-based system in ubiquitous use today, EyePoint provides no feedback on where a person is looking. Previous studies have shown that it is distracting to a person when she is aware of her gaze because she consciously tries to control its location. In the usability studies that Kumar conducted, he found that people's performance dropped when he implemented a blue dot that followed their eyes.
3.
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Mar 06, 2009 | Computers & Internet

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CD SKIPS


  OK.  I think I can help.  There are two very simple solutions to a skipping CD player.  You have tried one already, that is, clean the laser-reading eye.  Lets assume you did that correctly and that is not the problem.         So, to continue, the machine must be opened. Equipment required: Jewellers screwdrivers, small number one screwdrivers, cottonswabs or Q-tips, Petroleum jelly, 100% isopropyl alchohol is ok but if you can use Denatured alchohol that is the best.        Using a set of fine jewelers screwdrivers or just a small #1 Regular or Philips screwdriver to remove the top cover of the CD player.  Don't force anything and place the screws in a cup so they are not lost or misplaced. I work in a plastic cafeteria tray to contain any dropped screws    The problem here usually occurs in trusty old CD players that have always worked fine and the problem (skipping) starts out small and gradually progresses to always skipping.  The problem and solution are mechanical in nature.    First locate the laser eye and check it physically for any optical obstructions (dust, dust-bunnies, lint, feathers, hair, lumber, etc.)    When you are sure the laser-eye is clean find two parallel small (usually 1/8" or about 3mm wide by about 3 to 6 inches long ) chrome metal bars that the laser eye rides back and forth on.  The eye assembly has a small contact-lens looking clear plastic lens mounted on a plastic carriage that moves from the center of the disc toward the outside as it tracks the disc.  It will have a small ribbon wire harness that can expand and retract with the travel of the laser-eye carriage.  Now look at the two-parallel shiny metal bars the carriage should slide on. The lubricant on these bars lets the eye assembly move smoothly without vibration (or skips) over the length of the two steel bars and your CD plays perfectly when they are clean and lubricated.  This skipping problem can occur if something sticky is spilled into the unit. Soda or beer dries out and if it gets on these steel bars the laser-eye assembly can vibrate and chatter as it tries to track over the CD's info causing skips.      So the solution involves carefully testing the unit with the lid off to see what is going on inside when the unit plays (or attempts to play) a CD.  If the obstruction to the path of the eye assembly is severe, the tiny drive gears can be damaged, broken, or stripped and the eye will not move smoothly without new parts (Factory Authorized Service Personnel are recommended in that case)   Use the Denatured Alchohol and swabs to completely clean and dry the steel track rods that the laser - eye slide on, take care to clean any built up old grease (manufacturer lubricant) that may build up on the holes on the sides of the Laser-eye assembly where the steel track rods go through it.  After cleaning the rods use a new swab to apply a TINY amount of petrolatum evenly to each rod.  I cannot stress enough how important it is to use as little lubricant as possible ONLY on the rods and NOWHERE ELSE!  It is very easy to get the petrolatum somewhere you don't want it.  Be Careful!  One mistake here could cost you the entire unit!  after application, physically slide the eye assembly over the bars to smooth out the petrolatum lubricant evenly. (in the event the eye-assembly doesn't manually slide, don't force anything and go to the next step). make sure you did not get any petrolatum where you did not want it, if you did clean it with cotton and good old, denatured alcohol and put a CD in and before playing it, advance the tracks from track 1 to the highest numbered track and back several times to smooth the lube more.  Play the CD and replace the lid and screws in the order you removed them.      Good Luck!  

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