WEBVTT

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when touchscreen technology first hit the mass market the general opinion was

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that it was a fad that would pass much like any other with many people clinging

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tightly to the analog buttons on their phones and claiming that things like

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texting could never be the same without them but

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fast forward to today and it's practically impossible to find any of

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those previous skeptics who don't currently have their faces buried in a

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new touchscreen device tapping and swiping away but how did it all get

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started well the first touchscreens were developed all the way back in the 1960s

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using a capacitive design which works by

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coating glass with an electrically conductive surface now as we all

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remember from the first matrix film human beings are basically just

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batteries waiting around to be harvested by the machine so whenever one of our

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conductive little digits comes in contact with this type of screen the

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processor can sense the difference in charge as an input and although this

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technology was developed decades ago the same basic idea is used in even the

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highest end smartphones today cool right

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but just like anything else these wonderful devices don't function well

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under certain adverse conditions condensation from cold damp weather can

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get to your screen and get it wet causing it to register random presses

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and surface materials such as dirt or even the oil from your fingers can also

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impede a capacitive touchscreen's functionality i mean not to mention that

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they can't normally be used with a gloved hand so in cases where speed and sensitivity

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are not as important as reliability and functionality resistive screens can be a

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better option you'll often see these on kiosks cash registers atms and other

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places where durability really counts so

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these operate by having two thin sheets set apart by a small gap one of which

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has a current applied to it while the other is connected to voltage sensors

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whenever the screen is touched it causes the current and sensor layers to make

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contact registering an input because the outer surface of the screen

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doesn't contain any sensitive electronics resistive touch screens

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stand up very well to environmental hazards and careless users and can be

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used with styluses gloves and really any

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blunt objects though you won't see them very often in phones or tablets due to

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their bulk and lack of precision now as great as current touchscreen

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technology is i mean are we ever going to see it do more than just allow us to

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pick stuff on a display what if touch screens could touch you back well

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researchers are now trying to answer that very question with a number of

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different approaches for instance the prototype fusa 2 display from japan is

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made of optical fibers making it feel furry and aside from making your dog

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jealous because you couldn't stop petting your new phone it could have

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applications in interior design marketing i mean imagine a football

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field made of these fibers that could change the appearance or or detect

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exactly where the receiver's feet were when he fell out of bounds cool stuff

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right but it's not for everyone and if you don't want your screen to feel like

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a puppy there are a number of cool things in the works that can provide all

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sorts of tactile feedback a project called ultra haptics out of england is

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launching a system that enables both touch inputs and feedback in mid-air

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using ultrasonic pulses and disney research is working on a similar system

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that uses precisely directed blown air

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for virtual reality experiences gaming and more and speaking of disney research

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they're also developing the tesla touch system which uses minute changes in

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voltage on the touchscreen itself to actually make the screen mimic different

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gestures i mean imagine a picture of sandpaper feeling rough when you run

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your finger across it or a large file feeling heavier than a small one when

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you drag it to a different folder i mean who knows maybe one day you'll be able

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to feel Techquickie videos though i'm

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not sure if anyone's gonna like that idea very much

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but you know what's a good idea squarespace head over to squarespace.com

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you decide to sign up use offer code Linus to get 10 off your first purchase

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thanks for watching this episode as fast as possible guys if you liked it then

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touch me here if you didn't like it then you can touch me

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lower i guess oh that's weird uh don't forget to subscribe for more videos like

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this over here on techwiki and hey don't miss our other channels as well we've

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got all kinds of great videos over on Channel Super Fun and over on Linus tech

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