Apple logo at NYC store near Plaza Hotel.


By adding a more realistic sense of touch to its iPhone,Applemay haveconquereda technology thathas long promised to take us beyond merely feeling the cold glass of our mobiledevicescreens.


In its latest iPhones,Apple is expected to include what it calls Force Touch, allowing users to interact more intuitively with theirdevices via a pressure-sensitive screen which mimics the feel and response of real buttons.


In the long run, the technology also promises new or better applications, from more lifelike games and virtual reality to adding temperature, texture and sound to our screens.


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"Force Touch is going to push the envelope of how we interact with our screens," says Joel Evans, vice president of mobile enablement atMobiquity, a mobile consultancy.


Apple hasn'tdisclosedwhat it will announce at an event on Wednesday, but reports have said it will unveil new iPhones incorporatinga version of theForce Touch technology already in some laptop touchpads and itsWatches. Apple declined to comment.

As with previous forays, from touch screens to fingerprint sensors, Apple isn't the first with this technology, but by combining someexisting innovations with its own, it could leverage its advantage of control over hardware, interface and the developers who could wrap Force Touchinto its apps.

"Here we go again. Apple's done it with gyroscopes, accelerometers, they did it with pressure sensors, they've done it with compass, they've beengreat at expediting the adoption of these sensors," said Ali Foughi, CEO of US-based NextInput, which has its own technology, trademarked ForceTouch. "Apple is at the forefront."


Haptic technology - a tactile response to touching an interface - isn't new, even in mobile devices. Phones have long vibrated to alert usersof incoming calls in silent mode, or when they touch an onscreen button.

But efforts to go beyond that have been limited.

BlackBerry incorporated pressure sensing into its Storm phone in 2008. And Rob Lacroix, vicepresident of engineering at Immersion Corp, said his company worked in 2012 with Fujitsu on the Raku-Raku Smartphone, an Android phone that could distinguish between a soft and firm touch to help users unfamiliar with handheld devices.

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But mostefforts have been hamstrung by either a poor understanding of the user's needs, or technical limitations. A vibrating buzz, for instance, has negativeconnotations, causing most people to turnoffany vibration feature, saysJames Lewis, CEO of UK-based Redux, which has been working on similar touch technology for several years.

The technology powering vibrations is also primitive, he said, meaning there's a slight delay and a drain on the battery. Early versions of pressure-sensing technology also required a slightgap between screen and enclosure,leaving it vulnerable tothe elements.

Apple seems to have solved such problems, experts said, judging from their trackpads and the Watch. Indeed, the trackpad carries thesame sensation of a physical click of its predecessors, but without the actual pad moving at all.

The result: In the short term, Force Touch may simply make interacting with a screen more like something we'd touch inreal life - a light switch, say, or a physical keyboard. With Force Touch,the device should be able to tell not only whether we are pressing the screen, but how firmly. It should in turn respond with asensation - not just a vibration,but with a click - even if that click is itself a trick of technology.

"What we're going to see initiallyis putting life back into dead display," said Redux's Lewis."We just got used to the cold feel of glass."


To be sure, mobile is not the firstindustry to flirt with haptics.

For example, for car drivers,Reduxdemonstrates a tablet-like display which creates the illusions of bumps and friction whenyou run your fingersover the glass, mimickingphysical buttonsand sliders soyoureyes don't need to leave the road.

Mobiquity's technical adviser Robert McCarthy points to several potential uses of Apple's technology - measuring the force of touch when entering apassword, say, to indicate how confident the user is of their selection, or keying in a numeric passcode using different pressure levels as an extralayer of security.

WhileApple's adoption of the technology has awoken the mobile industry to its possibilities,it was pipped to the post by Chinesehandset maker Huawei [HWT.UL], which this monthunveiledone model with what it also tagged Force Touch technology. Pressing harder in a photo app, for example, allowsyou to zoom in on a picture without the usual two-finger spread.

Other manufacturers are exploring how to make touching a device more friendly, and more advanced, says Freddie Liu, CFO of Taiwan-based TPKHolding Co Ltd, an Apple supplier.

"This is just the beginning for Force Touch," he said.