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thanks for watching techwiki click the subscribe button then enable

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notifications with the bell icon so you won't miss any future videos

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so wouldn't it be useful if you could instantly know where people are looking

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without having to stare back at them maybe you're wondering if your crush is

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checking you out from across the room or maybe you're just hoping that no one can

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see you picking your nose inside the car well we haven't invented 360 degree

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bionic vision implants yet but there are a number of eye tracking technologies

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out there that can at least help your computer know exactly what you're

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looking at which has applications and feels from gaming to marketing to even

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psychology but how exactly do they work well it turns out there are a number of

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different ways to keep an eye on your eyeballs

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and the modern history of eye tracking goes all the way back to 1908 when

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psychologist edmund huey developed a contraption that looked like a contact

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lens with the lens part attached to a needle that would measure where the eye

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was pointed of course it wasn't exactly comfortable to have a gadget physically

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touching the user's eyes so while we patiently waited for the cubs to win

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another world series other inventors pushed the field forward

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and funnily enough it was in chicago in 1937 that another method of eye tracking

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was developed that involves shining light onto a subject's eyes and exposing

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the reflections onto film to understand human reading patterns now obviously

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modern eye tracking systems have dispensed with physical film but this

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strategy of examining light that reflects off your eyes is key to how

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consumer eye trackers work today you see eye trackers like toby which are

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gaining popularity with pc gamers fire infrared light instead of visible light

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at your eyes so the tracker will disturb your vision while you're in the heat of

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battle now this light is usually shown in the specific pattern which lands on

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your eye making it easier for the infrared camera built into the tracker

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to keep tabs on changes in how the light is being reflected

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so many times per second this camera will take infrared snapshots of the

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patterns on your eyes and process these images to determine where you're looking

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for gamers eye tracking is supported in quite a few popular games from indie

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titles to big budget aaa releases and can be used for everything from looking

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around the cockpit to determining where your targeting reticle will go in the

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shoot em up game and the technology has also shown problems for players with

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disabilities who might find traditional controllers difficult to use or even vr

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gamers who want the more realistic experience of the headset display

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adjusting to where their eyes are looking rather than just head movements

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and as for outside the gaming world eye tracking has also been used across

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disciplines to figure out what people are most interested in meaning it has

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obvious applications for advertisers eye tracking tech has already been used in

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studies that have revealed things about which elements of an advertisement or a

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web page best hold a viewer's attention and what things might just be taking up

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space or even turning the viewer off so this has raised concerns about how the

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technology may be used in the near future for example if you look at the

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digital display in the shopping mall containing an ad is there an infrared

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camera watching your eye movements without your knowledge is it being logged somewhere will websites end up

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being able to watch you through an eye tracker connected to your pc so that

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they can cook up even sneakier ways to serve you ads but even though eye

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tracking has plenty of applications in somewhat nefarious fields other areas

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like medical research also stand to benefit from it tremendously so you

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won't need a fancy eye or emitter and camera system to know that i'll be

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keeping an eye on it

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and speaking of keeping an eye on things are you tired of people keeping their

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eyes on you online well check out tunnelbear the simple vpn app that makes

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it easy to browse privately and enjoy a more open internet

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with tunnelbear turned on your wi-fi connection is secured and your online

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activity is kept private from your internet provider advertisers hackers

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and anyone else looking to track you or profit from your data television has a

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top-rated privacy policy and does not log your activity to try telebear for

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free with no credit card required just go to tunnelbear.com

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Linus okay guys you know what to do like dislike check out our other channels

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