Showing posts with label Tech 'n' ology. Show all posts
Showing posts with label Tech 'n' ology. Show all posts

Monday, 24 July 2017

Wi-fi technology helps a person to “see through walls” using the Wi-Fi signals










It is possible to “See through walls” by the glow of your Wi-Fi

Wi-Vi technology helps a person to “see through walls” using the Wi-Fi signals

Catching hold of criminals hiding behind walls has been made easy by the passive radar which can read the Doppler shifts in ambient radio signals which are emitted by Wi-Fi or mobile communications towers.

Gone are the days when criminals could easily shoot out the lights and try hiding in dark when congregated by police authorities. Already the creation of night vision goggles was helping the army and police authorities to catch hold of the criminals and now the hooligans have to worry about one more creation by the researchers and that is the passive radars which can catch hold of them on the basis of soft radio glow of wireless routers or mobile communication towers.

Tracking WiFi Signals to Passively See Through Walls Using NI USRP and LabVIEW:

Researchers at the University College London (UCL) have designed a novel technology which can track the Doppler shifts of the ubiquitous Wi-Fi and smartphone signals, thus helping authorities to “see” people who are moving even behind walls that are 25 centimeters in thickness.
Researchers believe that this novel technology can be used to detect the indoor moving targets for security purposes such as hostage situations. Apart from using it in public defenses the technology also finds it application in various scenarios such as crowd and traffic monitoring and human-machine interfacing.
At the National Instruments’ NI Week 2015 conference held in Austin, Texas from 3-9 August, this innovative technology has won the Engineering Impact Award under the category of  RF and Communications.
In case of the UCL technology, it uses only passive radiation which it receives from the Wi-Fi routers hence it is much more reliable and cannot betray the surveillance. Different kinds of wireless signals are applied under different scenarios, for instance, by acquiring IEEE 802.11x (b, g, n, ac) signals this technology can help to track the indoor moving objects for security purposes as in case of hostage situations. On the contrary, the same system  can also help to monitor cellular signals, such as Global System for Mobile Communications (GSM) or Long-Term Evolution (LTE) and this can help in determining the direction as well as the velocity of moving vehicles.
For calculating the position of the hidden target, the UCL system would compare the two signals:
  • A reference channel : This receives the baseline signal from the Wi-Fi access point or from other RF source.
  • A surveillance channel: This is the one which picks up the Doppler shifted waves that gets reflected from a moving human.
UCL technology works more or less like the traditional radar systems and it does rely on detecting the Doppler shifts in radio waves which are reflected by the moving objects. However, in case of traditional radar systems they transmit the radio waves whereas in the UCL technology the passive system relies on the ubiquitous Wi-Fi signals which are already present in the surrounding air waves. Due to the passive system, there is complete lack of spectrum occupation and power emission and this makes the UCL technology far better because the radar is undetectable.

Wi-Vi: See through Walls with W-Fi Signals: 

Another group of researchers, Dina Katabi and Fadel Adib of MIT have developed a technology (Wi-Vi) which helps a person to “see through walls” using the Wi-Fi signals.
Basically, Wi-Vi captures the signals emitted by a person moving behind walls and in closed room. The Wi-Vi device comprises of active radars which are built through the wall and it can transmit as well as receive the signals.

Indoor target tracking using high doppler resolution passive Wi-Fi radar: 

Another study comprises of a group of engineers who have published their papers which describes two Doppler only indoor passive Wi-Fi tracking methods based on “high Doppler resolution passive Wi-Fi radar”. Extended Kalman filter and the Sequential Importance Resampling (SIR) particle filters are the two filters which engineers have used in their study. This system basically works by comparing the reference and surveillance signals and it interprets even a very small frequency shifts and thus reveals the location and motion of hidden subjects.
Tan and his team, used a software defined passive Wi-Fi radar using a standard 802.11 access point as an illuminator to present the experimental results for these two tracking filters. Based on the experiment, the engineers concluded that of the two filters, SIR particle filter is the one which should be used for indoor tracking on the basis of Wi-Fi signals as it gives a much accurate and better performance. In their paper, the engineers have also given suggestions for simplifying the SIR particle and discussed various applications to multiple target tracking.
The engineers tweaked the processing parameters such as increasing the signal integration time and lowering the sensitivity thresholds; ultimately the engineers were able to make the passive radar “see through” the subtle movements which included even the hand gestures. The device was able to give some radar-style scatter plot along with some varied signals.

Tuesday, 25 April 2017

Twitch’s new affiliate program will let almost any streamer earn money


Twitch today announced a new affiliate program that will let pretty much interested streamer qualify to earn money as they play. Similar to YouTube’s Partner Program, Twitch’s new tier is meant to be available to any streamer who meets a baseline criteria involving 500 minutes streamed in the last 30 days, at least three concurrent viewers, and at least 50 followers. Twitch hopes the program will expand the number of streamers on its platform who use streaming as a means to earn money and eventually even to make a living.
As to how the program fits in with its existing partnership program, which is what lets streamers offered subscriptions to their channels for monthly fees and collect ad revenue, Twitch sees it as a step on the way to becoming a partner, a process that is more intensive and involves an application review. “Twitch is built upon looking to our content creators with both large and small communities to learn how we can best serve their needs," said Ethan Evans, Twitch’s senior vice president of commerce and developer success, in a statement. “With our upcoming Affiliate Program, we will be able to open up a means of support from the community to a whole new class of creators numbering in the tens of thousands."
The program will start with what Twitch calls “Cheering with Bits,” which is a micropayments system that lets viewers buy a certain number of animated emoticons to use in a streamer’s chat window. Over time, the company plans to roll out more monetization options for those in the affiliate program, including subscriptions, ad revenue splits, and merchandizing tie-ins. Twitch is launching the program shortly, it says, and it will start sending out invites to prospective members who meet the criteria over the course of the first several weeks of the launch.

Tuesday, 18 April 2017

How did the Internet start?

Mention the history of the Internet to a group of people, and chances are someone will make a snarky comment about Al Gore claiming to have invented it. Gore actually said that he "took the initiative in creating the Internet" [source: CNN]. He promoted the Internet's development both as a senator and as vice president of the United States. So how did the Internet really get started? Believe it or not, it all began with a satellite.
It was 1957 when the then Soviet Union launched Sputnik, the first man-made satellite. Americans were shocked by the news. The Cold War was at its peak, and the United States and the Soviet Union considered each other enemies. If the Soviet Union could launch a satellite into space, it was possible it could launch a missile at North America.
President Dwight D. Eisenhower created the Advanced Research Projects Agency (ARPA) in 1958 as a direct response to Sputnik's launch. ARPA's purpose was to give the United States a technological edge over other countries. One important part of ARPA's mission was computer science.
In the 1950s, computers were enormous devices that filled entire rooms. They had a fraction of the power and processing ability you can find in a modern PC. Many computers could only read magnetic tape or punch cards, and there was no way to network computers together.
ARPA aimed to change that. It enlisted the help of the company Bolt, Beranek and Newman (BBN) to create a computer network. The network had to connect four computers running on four different operating systems. They called the network ARPANET.­
Without ARPANET, the Internet wouldn't look or behave the way it does today -- it might not even exist. Although other groups were working on ways to network computers, ARPANET established the protocols used on the Internet today. Moreover, without ARPANET, it may have taken many more years before anyone tried to find ways to join regional networks together into a larger system.

In the next section, we'll look at how ARPANET joined with other networks to create the Internet.

Why are Web addresses in English?

The short answer: Web addresses are in English because the people who developed the standards for Web addresses were, for the most part, English-speaking Americans.
The longer answer: In the earliest days of the Internet, the only way to connect with a remote computer was to provide its unique IP address, a long string of digits such as 165.254.202.218. But in 1983, as the number of computers on the network continued to grow, the University of Wisconsin developed the Domain Name System (DNS), which maps numeric IP addresses to more easily remembered domain names like Techitrons.com.
In 1990, British scientist (and English speaker) Tim Berners-Lee invented the World Wide Web, and by 1992, more than one million computers were connected, most of them in the United States [source: Computer History Museum]. In 1994, the Internet Engineering Task Force (IETF), a standards organization made up of representatives from several U.S. government agencies, published a set of standards for Web addresses, which it called Uniform Resource Locators, or URLs [sources: Berners-Lee, Internet Society, Ishida].
To make Web addresses easy to read, write, type and remember, the IETF restricted URLs to a small number of characters, namely the uppercase and lowercase letters of the English (or Latin) alphabet, the digits 0 through 9 and a few symbols [source: Berners-Lee]. The allowable characters are based on the American Standard Code for Information Exchange, better known as the US-ASCII character set, which was developed in the United States and first published in 1963.
This all worked out fine for English-speaking countries, but as of 2009, more than half of the 1.6 billion Internet users worldwide spoke a language with a character set other than the English (or Latin) alphabet [source: Whitney]. To understand what using the Web is like for those individuals, imagine that you have to navigate the Web using only Arabic. The content on your favorite sites is still in English, but the Web address for every site you use is made up of completely unfamiliar characters that may not even be found on your keyboard [source: Ishida]. That scenario, in reverse, is essentially what the Internet experience has been like for Web users who read and write using not only another language, but an entirely different alphabet or set of characters. (Visit a website like Egypt's el-balad.com, for example, and the distinction between the site content, which is entirely in Arabic, and the Web address, which uses only English characters, becomes immediately clear.)

Given the growing number of non-English users online, it may come as no surprise that English Web addresses are no longer the law of the land. In 2009, ICANN, the U.S.-based nonprofit organization that regulates domain names on the Internet, approved the use of Internationalized Domain Names (IDNs), meaning that Web addresses would be able to contain non-English characters like Chinese, Korean, Arabic or Cyrillic script [sources: Arthur, ICANN].

Monday, 17 April 2017

Magnetico Is a personal Torrent Search Engine That Can't Be Closed Down

Magnetico: Self-hosted BitTorrent DHT search engine suite that can’t be taken down

Those using torrents know that the entire network has a centralized structure on which the rest of the network is dependent. Magnetico, is a project trying to change all that.

Past Efforts
After being around for more than a decade, BitTorrent can safely claim the title of an enduring P2P protocol. And through that time, the protocols haven’t developed much. So someone decided to do something about it, a new project called Magnetico aims to solve this by crawling BitTorrent’s Distributed Hash Table and generating an index on a machine controlled by the user. This week, TorrentFreak caught up with its creator.
That’s not to say no one has tried it before. DHT and PEX, for example, were great contributions but the reliance on centralized websites such as The Pirate Bay still persisted. That’s the problem that troubled Bora – the programmer hailing from Istanbul – who feels having a less centralized system would benefit the entire ecosystem.
“All the legal action taken against the community has always targeted the points of centralization, as they were the weakest points in the whole mesh,” Bora says. “In the beginning, trackers were required to facilitate the traffic between peers, but then we ditched them once more and more clients supported the distributed hash table (DHT). We eventually got rid of .torrent files as well [in favor of magnet links], which in turn allowed people to download the whole sum of The Pirate Bay in a hundred megabytes.”


In his efforts to achieve this, Bora has been working on the project magnetico (small ‘m’), which aims to “unplug” conventional torrent sites altogether. Just like the now defunct  BTDigg and the more recent AlphaReign, Bora’s software uses the Distributed Hash Table to search for content and peers with the difference being that the indexes magnetico creates will be private. In simpler words, it acts as a user’s personal search engine and can be installed on a machine that’s under the user’s control.
“magnetico is a collection of programs called magneticod (magnetico daemon) and magneticow (magnetico web),” Bora explains. “magneticod runs in the background and ‘trawls’ the DHT network to discover info hashes and then fetches torrent metadata from the peers (most importantly, the title and the file list). magneticow is a lightweight web interface for users to search and view the discovered torrents.”
Technical Details
“The magneticod module [accesses the DHT]and creates a dummy BitTorrent peer to fetch the metadata from the announced peer, and saves it in a database which you can later search and view,” Bora says. “As info hashes are the SHA-1 hashes of the torrent metadata, we can be sure of the validity of the metadata we got.”


Bora mentions that both modules can run without user intervention, thus making it simple to operate. Though, the software is still in its early stages of development, therefore, it might suffer from bugs – one of them being it becoming a resource hog and needing a restart.
“I am hoping to address all these issues in the next releases, after collecting useful feedback from the community,” Bora says. “I would consider myself as having succeeded if major client developers decided to push for BEP 51 and if we together make BitTorrent truly decentralised right in the protocol, rather than resorting back to the brute force solutions,” he concludes.
In the meantime, Bora hopes that BEP 51 (a BitTorrent Enhancement Proposal concerning DHT) will come to fruition. While magnetico may not be for the novice, Bora says its relatively easy to get it going. To find out more about it yourself, you can head over here.
Source: torrentfreak 

Sunday, 5 February 2017

MARK ZUCKERBERG USES THIS TECHNOLOGY TO FULFILL HIS NEEDS

Mark Zuckerberg's splashy new smart home technology, Jarvis, has garnered attention for playful features like a T-shirt cannon. 

The hacked-together artificially intelligent assistant is a unique personality programmed by Zuckerberg. But in order to "talk" to appliances, Zuckerberg's DIY project got some pretty high-end help. Jarvis is actually built on top of an elite smart home technology by Crestron.
Custom electronics are ubiquitous in the homes of "the 1 percent," and major technology companies, including Facebook and Microsoft, said John Clancy, Crestron's vice president of residential. Crestron already powers a home of Virgin Group founder Richard Branson and many pricey homes in President-elect Donald Trump's properties, according to its website.

Clancy declined to say how much Zuckerberg may have paid Crestron for the services, though he said it was probably not a normal rate, since Facebook is a big Crestron customer and they "helped him out."
Zuckerberg's engineering did add some powerful new features that Clancy said he expects will be in high demand. For one, Zuckerberg's artificial intelligence went beyond fixed phrases or hitting buttons, since it has the ability to learn. Plus, Facebook's facial recongition technology and ability to text with Facebook Messenger are unique, Clancy said, not to mention the voice by Morgan Freeman.


Unlike an off-the-shelf consumer product like Google Home or Apple HomeKit, Crestron manufactures all the devices in its ecosystem and has government-facility level cybersecurity. Crestron can also integrate with devices like Amazon's Alexa or Apple's Siri.


Because the systems are high-end and bespoke, Crestron has been able to build automated systems for clients that run "dog walking scenarios," trigger self-playing pianos or turn the lights blue when a Yankee game starts, said Clancy. The touch screens and switches can also be matched to users' decor, according to Clancy, who installed and integrated internet of things systems himself for 23 years in NYC penthouses before stepping into his current role.




"Regular IoT products have limits," Clancy said. "All our products together are limitless." 
For instance, Branson's devices are optimized for the taxing Caribbean environment, according to Crestron's website, while a Hoboken, NJ condo that formerly belonged to New York Giants quarterback Eli Manning could control the music playing in the shower.
While Zuckerberg's primary reason for building Jarvis was a resolution to get more familiar with Facebook's latest engineering, he's already sold some more billionaires on the idea. 
"Hey, Mark. Can Jarvis secretly order a hamburger and have it delivered to the back door? Asking for a friend...," Microsoft co-founder Bill Gates commented on Zuckerberg's Facebook page. "I think I can build that for you, Bill," Zuckerberg responded.
Still Crestron doesn't expect Zuckerberg to start stealing away clients any time soon, Clancy said.
"Very few of these very large homes — or in NYC, where I was focused, very expensive apartments — are built without a control system," Clancy said. "We have kind of a unique ability to customize to a very high level."

FOR VIDEO PLS CHECK IN YOUTUBE 

Sunday, 22 January 2017

kill'in SAMSUNG GALAXY S8

As Samsung suffered a setback and had to face embarrassment due to the exploding Samsung Galaxy Note 7 fiasco, it is in great need of winning back its customers. There are plentiful rumors of the new Galaxy S8 circulating around numerous tech and gadget community sites.

According to the latest rumor, the Korean tech giant Samsung is trying to clone the Continuum feature for its next flagship smartphone, the Galaxy S8, so users can seamlessly sync their Galaxy phones to a PC. Continuum is a Windows 10 feature which Microsoft has already released with the Lumia Smartphones that turns your smartphone into PC when connected via keyboard, mouse and monitor.
An alleged leak of a slide from a Samsung presentation has been reported by All About Windows Phone (AAWP). It shows a phone connected to a LCD screen, along with a keyboard and mouse complete with apps, folders and multiple windows all visible at once. 
Samsung has opted for a rather basic interface, quite simple, with a workspace at the top and a function bar at bottom with notifications that can show running apps, time and the phone’s battery. It seems that the desktop will be able to accommodate shortcuts pointing to applications and the windows opened by us will also appear here.
A mobile PC definitely comes in handy and gets the job done at all time. This feature will provide a full-fledged desktop experience along with multi-window multi-tasking since having a larger display always works as an advantage. However, it’s unclear how the TouchWiz Android interface could be functioning with the Galaxy S8. If this speculation holds true, the Galaxy S8 would add a feather to its cap and will be a big selling point.

Thursday, 12 January 2017

This smartphone would make the whole Star Trek crew jealous

The Changhong H2 is a smartphone like you've never seen before



Apart from consumer product launches from major OEMs, CES 2017 is also a platform for companies that want to showcase their latest and greatest experimental designs. But many of these prototypes slip under the radar and honestly it’s a real shame.
That’s why today we want to bring to your attention a highly unusual smartphone. Fans of Star Trek will probably remember Spock and Dr. McCoy’s tricorder – a device used to analyze all kinds of materials and objects. Well it turns out a handset with a built-in tricorder-like system actually exists.


Aptly named Chinese company, Consumer Physics unveiled the world’s first smartphone that features a molecular scanner. The device is called Changhong H2 and features a SCiO sensor which can correctly identify the composition on several materials. The phone achieves that by connecting to the Internet and tapping into information stored on a server.

The scanner lives on the back of the device, where the main camera should be. The sensor takes advantage of a spectrometry system in order to beam out a near-infrared light on the object that needs to be analyzed. At the CES 2017, Consumer Physics demonstrated how the phone could be used to rate fruits based on their freshness. It also correctly identified a person’s body mass index (BMI) by letting the sensor analyze the person’s skin.
Another demo showed the smartphone scanning different pills in order to identify their chemical composition.

Lots of people complain of the lack of innovation in smartphones. Well the Changhong H2 is not your average handset that’s for sure. It would be interesting to see Consumer Physics partner up with an iconic smartphone producer like Samsung or HTC in order to bring their tech to the masses. The Changhong H2 will be available in limited quantities and that’s a real shame, because a tricorder-equipped smartphone like this could find numerous uses in daily life.

Wednesday, 11 January 2017

HOW OLD IS GOOGLE? GOOGLE’S BIRTHDAY AND OTHER INTERESTING FACTS ABOUT THE WORLD’S LARGEST SEARCH ENGINE

Few other companies have turned their name into an adjective. We no longer perform an internet search for something, we Google it. I don’t know of any other brand trademark that does that. Oh and it runs a search engine and has a few other interests too. But how old is Google? When it its birthday and what other things don’t we know about the search engine giant? Let’s find out!


HOW OLD IS GOOGLE?

Google hit 18 years old in 2016. Nobody actually knows, or admits when the specific date is but we know that it has a couple of attributable days of birth. The company showed a celebratory Google Doodle on 27 September but there is no tangible link to that date. In fact, the Google.com domain was registered on 15 September 1995, so may in fact be 19 and not 18.
A month later, the company filed for incorporation in California. Only then does it become an official company. It opened its first bank account on 4 September 1998 which means it could actually begin trading. So the answer could be 18 or 19 and one of two actual dates, or maybe more. Some say there are six ‘birthdates’ in total.

OTHER COOL GOOGLE FACTS

As you can imagine in an enterprise as massive as Google, there are some more interesting pieces of information floating around.

Google doesn’t like being an adjective for search

As mentioned at the top, we Google stuff online now rather than search for it but it seems the company itself doesn’t like the term. It apparently worried about the ubiquity of the term undermining the brand value they had worked so hard to build up.

Google buys at least one company per week

According to industry sources, Alphabet, the company behind Google buys a company per week and has done for many years. Some are brought into the fold and disappear forever while some keep their own brand name and operate under the brand umbrella.

There is a skeleton of a Tyrannosaurus Rex on Google Campus


As well as looking awesome, the model of the Tyrannosaurus Rex is to remind employees to always drive ahead and not allow the company to become stagnant and go extinct. It is quite the message wrapped up in a very attractive package!

The Tyrannosaurus Rex appears on the search page too

If you open Chrome without an internet connection you may see a little dinosaur next to the search box. Press the space bar as soon as you see it and you access a minigame where you run along as the dinosaur in a sort of Mario-esque jumping game.

The first Google Storage was made with Lego

Google’s datacenters are now some of the most advanced anywhere in the world. Yet the first ever storage server was made from a series of hard drives located within a chassis made entirely of Lego. It was called Backrub for some reason.

If you die while working for Google your family gets paid

If you die slaving away at your desk while you’re a Google employee, your family will receive 50% of your salary each year for a decade. As death benefits go, there is nothing else quite like it. Plus, if you have children, they get money until they come of age too.

When Google went down, so did 40% of the internet

Google crashed on 18 August 2013 and took five minutes to come back up. In that time, 40% of internet traffic went down with it. That’s a huge amount! While Google still remains dominant, it is unlikely that Google would ever go down again but if it did, it would not take quite as much traffic down with it.

A single search uses more computational power than the entire Apollo 11 project

Search for one single thing on the search engine and you use more computer power than the entire Apollo 11 mission. While lots of these kinds of statistics are thrown around, nothing brings it home like this one. Considering how many searches we perform each day, that’s a lot of men on the moon!

‘I’m Feeling Lucky’ costs Google millions of dollars per day

Hit the ‘I’m Feeling Lucky’ and you cost Google money. The search skips all the ads the company serves, depriving it of revenue. Think about that every time you’re feeling lucky.

Google hires goats

Most tech companies have some interesting hiring policies but this one is certainly different. As the Google campus is so huge with so much lawn, the company uses goats instead of lawnmowers to keep the grass in check. Around 200 goats visit for a week at a time to chew the grass and save gallons of lawnmower gas and lots of noise and pollution. Good move!
Got any Google facts we haven’t listed? Tell us about them below!

Friday, 30 December 2016

Google Is making A New FOLDING Phone

In 2017, your Smartphone will get a new glass curve which can be more bendable and stretchy. This smartphone will have a foldable display screen, which is supposedly signed by Google.

Google Flexible Phone: Google has signed an agreement with LG Display to discover a Smartphone, which is more flexible ever seen. These screens will permit you to use your phones like a book and will give you the real feeling of reading eBooks and watching the video.
Google Folding Phone: The South Korean news site Etnews, said that Apple and Microsoft have shown their interest to make an “out-foldable” screen Smartphone’s, which will consist of OLED technology. This will provide you complete screen. LG Display had already invented the working prototype board explains of having the “significantly high” technical smoothness. We can observe that the new devices are going to be launched very shortly. LG has already proved us by showing many bendable ideas in a number of events to broadcast its technology.
Google With LG: The widescreen TV was the target which had made for the immersive curved screen. This TV has made the LG company move up and nearly available in all over the place without upsetting playback or performance. The Flex and Flex 2 curved display Smartphone was also invented by LG and got high-rate by the observer. Flexible displays in smartphones will be an advanced design for the Smartphone developers all over the world in this upcoming year.