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Microsoft Research has published a technical paper reviewing their work with near-eye displays for virtual and augmented reality to project phase-only holograms.

The team built a holographic projector that displayed a series of sub-holograms, which allowed the hologram to display variable depths of focused light. The projector was then combined with a series of eyepieces to achieve the displays.

With their prototype display, the team was able to achieve high-quality holographic images. By processing holograms in the GPU, the team rendered 3D models in real time with depth-of-field.

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Wi-Fi can pass through walls. This fact is easy to take for granted, yet it’s the reason we can surf the web using a wireless router located in another room.

However, not all of that microwave radiation makes it to or from our phones, tablets, and laptops. Routers scatter and bounce their signal off objects, illuminating our homes and offices like invisible light bulbs.

Now, German scientists have found a way to exploit this property to take holograms, or 3D photographs, of objects inside of a room — from outside of the room.

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Many of us have already come to know the disembodied voices of personal assistants like Apple’s Siri or Amazon’s Alexa, but now a software engineer has finally put a face to a name.

Jarem Archer, who works as a consultant through his business, unt1tled, created a hologram device to match Microsoft’s Cortana personal assistant from Windows 10. She’s just like Cortana the Halo character, which Microsoft based its own on — she’s a slightly translucent, blue-light babe with a hip-waist-bust ratio that exposes her origins in the world of gaming. But Archer’s Cortana is 3D and paces around inside a pyramid prism that rests on a table. In his demo video, he asks Cortana if he’ll need an umbrella, and she then pulls up a graphic with the temperature and assures him that it’s “probably not necessary.”

“I’m just kind of seeing where this goes,” Archer, 33, said in a phone interview.

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Oscar Wilde once said that life imitates art, and science and engineering is often no exception to this. Science fiction certainly provides science types with plenty of inspiration for inventions, including holograms, teleportation, and even sonic screwdrivers.

Star Trek’s all-purpose medical device, the Tricorder, has also inspired a fair few people to recreate its near-magical ability to instantly diagnose a patient. As it happens, the non-profit X-Prize Foundation were so keen to get one invented that they started a global competition to see if any mavericks would succeed.

Rather remarkably, one team has emerged victorious in their endeavor. A family-led team from Pennsylvania, appropriately named Final Frontier Medical Devices, have bagged themselves a sum of $2.5 million, with a second-place prize of $1 million going to the Taiwan-based Dynamical Biomarkers Group.

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Today a little history was made. Verizon and Korean Telecom (KT) unveiled the world’s first live hologram international call service via the companies’ trial 5G networks established in Seoul and in New Jersey, respectively. Our cover graphic shows Verizon CEO Lowell McAdam (left) and KT CEO Hwang Chang-gyu demonstrate a hologram video call on a tablet PC at the KT headquarters in central Seoul Monday.

In the demonstration, a KT employee held a meeting with a Verizon employee in New Jersey who appeared as a hologram image on a monitor in the KT headquarters building.

It was the world’s first successful end-to-end 5G network interworking, according to the two firms. Both 5G trial networks were deployed over a 28 GHz spectrum.

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Stephen Hawking appeared through the marvel of modern technology as a hologram during an event in Hong Kong last week. He had some harsh words regarding our current climate of disregarding experts.

Stephen Hawking is a real wonder to behold. The now 75-year-old astrophysicist was told that he wouldn’t see past his 25th birthday due to his diagnosis of ALS (amyotrophic lateral sclerosis) or Lou Gehrig’s disease. And, although he is bound to a wheelchair, his mind has wildly surpassed his physical limitations.

Embracing his lack of limitations, Hawking recently appeared as a hologram at an event in Hong Kong last week. During the talk, Hawking fielded questions about exoplanets, black holes, and other topics that firmly fit within his area of expertise. He also made a few enlightening comments about current affairs.

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If you think augmented reality is only fun and games, consider that we’ve already witnessed the first known police action taken against hologram technology. During the summer of 2015, a performance by controversial gangster-rapper, Keith Cozart, was shut down when local police discovered the musician was broadcast as a hologram into a benefit concert in Indiana—close to the border of his home state of Illinois.

Cozart, who goes by the stage name “Chief Keef,” is from a rough neighborhood in Chicago, and has ties to local gangs as well as a criminal record including felony gun charges. His music, which glamorizes a gang lifestyle and violence, has prompted public officials—including Chicago mayor Rahm Emanuel—to pressure music festivals to avoid inviting Cozart because they say it poses a “significant public safety risk.”

Due to outstanding warrants for his arrest, Cozart can’t even return to Chicago, and so unable to perform in the area, he took the innovative approach of performing from California, but as a hologram beamed into the Indiana music festival. But even that was too much for police, and the performance was immediately stopped.

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