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If you think texting while walking is dangerous, just wait until everyone starts wearing Google's futuristic, Internet-connected glasses.

While wearing a pair, you can see directions to your destination appear literally before your eyes. You can talk to friends over video chat, take a photo or even buy a few things online as you walk around.

These glasses can do anything you now need a smartphone or tablet computer to do —and then some.

Google gave a glimpse of "Project Glass" in a video and blog post this week. Still in an early prototype stage, the glasses open up endless possibilities — as well as challenges to safety, privacy and fashion sensibility.

The prototypes Google displayed have a sleek wrap-around look and appear nothing like clunky 3-D glasses.

In development for a couple of years, the project is the brainchild of Google X, the online search-leader's secret facility that spawned the self-driving car and could one day send elevators into space.

If it takes off, it could bring reality another step closer to science fiction, where the line between human and machine blurs.

"My son is 4 years old and this is going to be his generation's reality," said Guy Bailey, who works as a social media supervisor for a university outside Atlanta, Ga. He expects it might even be followed by body implants, so that in 10 years or so you'll be able to get such a "heads-up display" inside your head.

In Google's video, a guy wearing the spectacles is shown getting subway information, arranging to meet a friend for coffee and navigating the inside of a bookstore, all with the help of the glasses. It ends with him playing the ukulele for a woman and showing her the sunset through a video chat. Google posted the video and short blog post about Project Glass on Wednesday, asking people to offer feedback through its Google Plus social network.

By Thursday, about 500 people did, voicing a mix of amazement and concern about the new technology. What if people used it in cars and got distracted? What about the effect on your vision of having a screen so close to your eye?

(Read by Brian Salter. Brian Salter is a journalist at the China Daily Website.)

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(Agencies)