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Strap on your computer, because wearable tech is taking off

SAN FRANCISCO — The digital domain is creeping off our desktops and onto our bodies, from music players that match your tunes to your heart beat to mood sweaters that change color depending on your emotional state — blue for calm, red for angry. There are vacuum shoes that clean the floor while you walk and fitness bracelets, anklets, and necklaces to track your calorie burning.

‘‘Everyone agrees the race is just beginning, and I think we’re going to see some very, very big leaps in just the next year,’’ said tech entrepreneur Manish Chandra at a wearable technology conference and fashion show in San Francisco last week.

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Wearable technologies have long been a sideshow to mainstream laptop and smartphones, but this year Google’s Glass and rumors of Apple’s iWatch are popularizing the field. Analysts forecast swift growth. Last year the market for wearable technology — encompassing everything from hearing aids to wristband pedometers — totaled almost $9 billion. That should climb to $30 billion by 2018, said analyst Shane Walker at IHS Global Insight.

As wearable technologies proliferate, humans will need to adapt, said Georgia Tech professor Thad Starner. He advises Google on its glasses, which are lightweight frames equipped with a hidden camera and tiny display that responds to voice commands. Starner has worn his for several years.

‘‘We’re talking about paradigm-changing devices,’’ Starner said, ‘‘capabilities that people haven’t thought of before.’’

He said that, unlike the computers and tablets that people engage with, wearable computers are designed to be in the background, secondary to the wearer’s attention.

‘‘It seems like a paradox, but when you pull the technology closer to your body, there’s a seamless interaction, it’s more an extension of yourself,’’ he said.

But there are sure to be cultural and social issues. Google Glass — and some emerging competitors — have raised concerns of people who don’t want to be surreptitiously videoed or photographed. And what about interacting?

At last week’s conference, attendees slipped on monitors that measured their heart rates and temperatures to reflect whether they really were enjoying a movie and shot photos through their Google Glasses.

‘‘Do you really want a touchscreen on the front of your T-shirt? Is it socially acceptable to be poked all over your body for somebody to use your wearable computer?’’ asked Geneviève Dion, who directs a fashion and technology lab at Drexel University.

The answer, for some, is no.

In a newly released survey from Cornerstone OnDemand, 42 percent of workers said they would not be willing to strap on wearable tech for their jobs, with older and more traditional employees more reluctant than their counterparts. The survey polled 1,029 Americans aged 18 and over in August, and had a 3.1 percent margin of error.

And then there’s an issue of bandwidth, said Ritch Blasi, a consultant with SVP-Comunicano who researches the wearable technology market. At this point, there simply isn’t enough network service to support universal and constant wireless use, he said. But that too will catch up.

‘‘It almost makes you think everyone is going to turn into a cyborg,’’ he said, referring to a fictional, prosthetic-laden high tech comic book superhero.

And will they?

‘‘When you look at the world and everything people are doing?’’ said Blasi, pausing for a moment. ‘‘I think the answer to that is yes.’’

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