The SpaceX and Tesla CEO made the announcement of two beta tests — one public and one private — on Twitter Wednesday night.
Category: internet – Page 221
Who knew there were so many “smart” ways to unlock a lock? For years companies have been trying to get people to use their phones or keypads or fobs, and now a new startup called Yeeuu Tech has thrown a bunch of methods into one device. The S1 Smart Lock packs eight different unlocking methods, and it can be fitted into most existing locks.
The S1 takes the place of an existing door handle and lock barrel. To unlock it, users can scan their fingerprint, punch in a passcode, use the app via Wi-Fi or Bluetooth, use a device with NFC, tap an included custom “badge”, give a voice command through an assistant, or use an old-fashioned mechanical key.
The fingerprint sensor is located on the top in easy thumb reach, and can apparently be read in under half a second. The system can store up to 50 different fingerprints.
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Underwater quantum links are possible across 30 meters (100 feet) of turbulent water, scientists have shown. Such findings could help to one day secure quantum communications for submarines.
Quantum cryptography exploits the quantum properties of particles such as photons to help encrypt and decrypt messages in a theoretically unhackable way. Scientists worldwide are now endeavoring to develop satellite-based quantum communications networks for a global real-time quantum Internet.
In addition to beaming quantum communications signals across the air, through a vacuum, and within fiber optic cables, researchers have investigated establishing quantum communications links through water. Such work could lead to secure quantum communications between submarines and surface vessels, and with other subs, aircraft, or even satellites.
Alibaba’s founder Jack Ma said on Friday in a virtual interview with China Media Group that under the current situation of COVID-19, the internet economy is supporting the world and the internet is the technology of the future.
“No country or enterprises can be isolated from the internet,” Ma said, adding that every one of us must grasp the future and improve the country’s economic system through future technologies and ideas.
Your phone’s GPS, the Wi-Fi in your house and communications on aircraft are all powered by radio-frequency, or RF, waves, which carry information from a transmitter at one point to a sensor at another. The sensors interpret this information in different ways. For example, a GPS sensor uses the angle at which it receives an RF wave to determine its own relative location. The more precisely it can measure the angle, the more accurately it can determine location.
In a new paper published in Physical Review Letters, University of Arizona engineering and optical sciences researchers, in collaboration with engineers from General Dynamics Mission Systems, demonstrate how a combination of two techniques—radio frequency photonics sensing and quantum metrology—can give sensor networks a previously unheard-of level of precision. The work involves transferring information from electrons to photons, then using quantum entanglement to increase the photons’ sensing capabilities.
“This quantum sensing paradigm could create opportunities to improve GPS systems, astronomy laboratories and biomedical imaging capabilities,” said Zheshen Zhang, assistant professor of materials science and engineering and optical sciences, and principal investigator of the university’s Quantum Information and Materials Group. “It could be used to improve the performance of any application that requires a network of sensors.”
Here’s another neat thing drones can do—beam power across the sky to recharge sensors in hard-to-reach places.
Remote sensors play a valuable role in collecting data—but recharging these devices while they are scattered over vast and isolated areas can be tedious. A new system is designed to make the charging process easier by using unmanned aerial vehicles (UAVs) to deliver power using radio waves during a flyby. A specialized antenna on the sensor harvests the signals and converts them into electricity. The design is described in a study published 23 March in IEEE Sensors Letters.
Joseph Costantine and his colleagues at the American University of Beirut, in partnership with researchers at the Institute of Electronics, Computer, and Telecommunications Engineering in Italy, were exploring ways to remotely charge sensors using radio frequency waves (the same form of energy used to transmit Wi-Fi). However, a major challenge was that the source of the radio waves must be fairly close to the sensor in order to sufficiently charge it.
This prompted the researchers to consider the use of UAVs, which could soar over each sensor. “In addition, a UAV can follow an optimized trajectory that maximizes energy transfer to the sensors in question,” Costantine explains. He says his team developed this system to control and recharge sensors used in agriculture, but that it could be extended to any situation where sensors are deployed in hard-to-reach areas.
In this video, we’ll be discussing 5G – more specifically, what it is and its ability to change our world! 5G is a core technology in establishing the digital infrastructure of the future and will be essential in how all of the over 50 billion mobile and connected devices by 2020 will communicate together!
[0:25–2:55] First we’ll take a quick look at the history of mobile networks, and how they have evolved over the years to present day.
[2:55–14:20] Following that, we’ll focus on the technologies a 5G network is composed of and the improvements in speed, latency, bandwidth and energy consumption they will bring.
[14:20–23:40] Finally, we’ll discuss the transition process from 4G LTE networks to 5G as well as the timeframe for the release of 5G to the public.
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Expert Systems and Sociometrica analyze the sentiment of 63,000 social media posts each day to … [+] determine the emotional state of the internet in response to COVID-19.
PCs, tablets, 5G-powered live streams, and cloud platforms are all expected to see more demand from the education sector in China, with the coronavirus outbreak accelerating a digital shift, according to a report from research firm IDC China.
The mysterious sight has been caught on camera everywhere from Spain to the US and Australia over the past few weeks.