Known as ‘LiFi’ the new technology uses visible light communication to transmit information – with lights such as those found in the ceiling of buildings turning on and off at a very high speed, not visible to the human eye, to communicate with LEDs in phone or tablet screens.
LiFi based links are much faster than WiFi, which uses radio frequency waves, meaning that a film which may take an hour to download using WiFi could take just seconds using LiFi, with live streaming also much easier and reliable.
The research being carried out by Northumbria and UCL focuses on the creation of a new low-cost, plastic all-organic LED which will be used to develop the world’s first complete visible light communications system.
Project lead Zabih Ghassemlooy is Professor of Optical Communications at Northumbria University and also heads up Northumbria’s renowned Optical Communications Research Group.
He said: “In the future almost all the lights we use in our homes and offices will be LED – they are cheaper, greener and more efficient, using up to 10 times less energy than traditional incandescent or fluorescent lights.
“Given the increasing amount of data we are all using, it therefore makes perfect sense to develop this LiFi technology so we can use our existing lighting infrastructure to provide fast internet in the future.
“The new LEDs being developed at UCL during this project not only provide light but will have additional functionality to allow them to communicate with other electronic devices, not only delivering data but receiving it back as well.”
As well as the increased speed, LiFi could deliver additional benefits over WiFi, including not exposing users to radio frequency radiation and being safe to use in areas such as hospitals, where WiFi cannot be used due to the electromagnetic interference it causes.
With its ability to allow electronic devices to communicate with each other, LiFi could also successfully be used within homes and work places, as well as for car-to-car communications; underwater communications systems between various manned and unmanned platforms; for communication between handheld devices and as an enabler for local positioning systems.
It is envisioned that smartphones will play a major role in the delivery of LiFi networks, with the technology expected to be in everyday use in the next five to 10 years.
Dr Paul Haigh, a former Northumbria University PhD student, now a Senior Research Associate at UCL, working there with Professor Izzat Darwazeh, is also involved in the project. He said: “The LEDs we are developing are plastic, flexible devices which are cheap to make and which are already appearing in high-end mobile phones, tablets and televisions.
“We are incorporating these into a thin film, just 500 nanometers (0.0005 millimetres) thick that could be used as a smart phone or tablet screen, allowing it to act as a LiFi transmitter.
“In addition, as well as looking at how we transmit information from a light in the ceiling to an electronic device, we are the first researches to also consider how we can transfer information the other way too, allowing devices to essentially talk to each other.”
The three-year project has been funded by the Engineering and Physical Sciences Research Council (EPSRC) and will run until September next year.
The research is being led by Izzat Darwazeh, Professor of Communications Engineering at UCL; and Zabih Ghassemlooy, Professor of Optical Communications at Northumbria University. The research team also includes Professor Franco Cacialli, who leads the UCL group within the London Centre of Nanotechnology responsible for developing the novel organic devices for the project. Professor Ioannis Papakonstantinou, Dr Paul Haigh and Dr Alessandro Minotto of University College London, and Dr Hoa Le Minh and Dr Andrew Burton of Northumbria University are also involved in the research.
Cisco gives pre-owned tech a Refresh
In a market of constant upgrades, Cisco Refresh aims to keep quality product away from landfills, writes BRYAN TURNER.
When one gets a new smartphone upgrade, the old device may be used as a backup or can be used by someone else. In business environments, equipment upgrades may not be conducive to keeping old equipment around, which may send older, working equipment to landfills.
This is where Cisco’s Refresh initiative comes in. At Cisco Connect in Sun City this week, Ehrika Gladden, VP and general manager of Cisco Refresh, lifted the lid on a little-known aspect of the company’s strategy.
“Refresh is Cisco’s global pre-owned equipment business unit,” said Gladden. “It is certified to meet the quality and engineering standards of Cisco. It is licensed for software and it’s also inclusive of a services warranty.
“Our responsibility in 80 countries around the world is tied to both the recovery of assets and the ability to leverage those assets at a lower price point. This ensures our sustainability and proper usage of the Earth’s resources while providing access to small and medium businesses. The products are typically in the range of 20-40% cheaper. The products represent the entire portfolio for Cisco in some part, the majority of that product set is 2+ years in terms of generation.”
Cisco’s Circular Economy initiative ensures a sustainable loop through businesses willing to pay a premium for the latest, cutting-edge solutions, while Cisco markets older, working equipment for resale to those who don’t require the latest solutions. This ensures far less new components need to be used in a product range.
“We are leveraging the model of remanufacturing, refurbishing, recycling, and reusing,” said Gladden. “Depending on the product set, there is a certain set of product yield that we expect. They vary from product to product, but we do have a percentage that doesn’t make it through.
“Those are always reused, meaning we will look at those products and decide to use them completely differently, leveraging the components, remanufacturing back into the overall build process. If that can’t be done, we will go into a recycle process where we melt those products down to reuse them.”
Repairing and refurbishing older products isn’t just that. Cisco is creating repair centres that are owned by third-parties to uplift local ownership.
“The repair centres, as a global manufacturer, is Cisco’s entree into local ownership,” said Gladden. “I want to be precise about what I mean by local ownership. It’s critical for us to have a localised presence, but doing that through ownership. When you look at inclusive economies, those that are participative, to be sustainable – not in the product set, but generationally.
“The ability as a global manufacturer through a local ownership model isto create a repair centre where a product can be returned, screened, tested, and repaired, leveraging the talent that the Networking Academy is creating.”
Cisco is working closely with local governments to understand where it operates and how to leverage the skills in the market.
Gladden said: “We are also super excited about the National Development Plan and African Union statements which with we align: eradication of poverty, job creation, ownership, healthcare, education, it all fits in the model. So we were very excited to have the opportunity to come to Africa first to announce this. Over the next twelve months, we want to establish our first repair centres, and in the next 3 to 5 years, build that vision into a reality.”
Why Data Privacy has become a Pipe Dream
If you’re active on WhatsApp, Facebook or any other social platform, you’re not as safe as you thought, writes
AARON THORNTON, MD of Dial a Nerd
As you begin to read this, let’s perform a quick experiment! How many active conversations are you engaged in – right now – on WhatsApp? When was the last time you shared a picture or video on Instagram? Is Facebook currently open and active on one of your devices? And how many internet- connected devices are you using at this moment? Chances are, you have multiple devices running multiple applications most of the time. So what’s the problem, you ask? Since when did checking in with a high school buddy in Australia via Facebook become a dangerous act?
In reply, we say, read on if you can stomach it!
Nation-State Hacking & You
It might seem like a laughably long shot to say that you are a key player in the increasingly sinister and sophisticated world of nation-state hacking. Well, you are. Given that individuals, businesses and governments are now constantly connected, round the clock, consumers and businesses have become fair game in cyber espionage. And as we create and share more and more data, both the value and accessibility of that data increases. According to a report by McAfee, IP theft now accounts for more than 25% of the estimated $600 billion cost of cybercrime to the world economy.
With data having become the ‘new gold’, nation states are naturally pouring investment and key resources into building advanced cyber warfare tools. Indeed, entire divisions of armed forces as well as the upper echelons of corporate leadership are devising ways to harness data to gain economic, political and social power. At the highest level, tools and platforms are being developed with the specific aim of perpetrating cyber espionage and data theft. No surprise then, that the consumer and business environments are rife with increasingly advanced malware, ransomware and many other malicious hacking tools and methods.
Still not convinced? Yes, we can smell the scepticism from here! So let’s take a moment to see how this has already played out, beneath our noses.
Remember the Facebook–Cambridge Analytica data scandal of early 2018? For many, this was a watershed moment in the emerging war for consumer data – and the ensuing tensions between privacy, power and profit. Need a refresh? Well, in 2018, Facebook exposed data on up to 87 million Facebook users to a researcher who worked at Cambridge Analytica, which worked for the Trump campaign. In essence, the data was harvested without user consent and used for political purposes.
Another chilling but less direct example can be found in Russia’s meddling in the 2016 U.S. elections. According to Politico, Russia launched a massive social media campaign to ‘sow discord’ leading up to the elections. The website reported that as early as 2014, an infamous Russian “troll farm” known as the Internet Research Agency – a company linked to Russian president Putin – developed a strategy using fraudulent bank accounts and other fake identity documents to “spread distrust towards the candidates and the political system in general.”
When referring to the Russian hacks and their impact on election results, one U.S. Representative sagely noted: “They didn’t just steal data; they weaponized it.”
Ignorance is not bliss
Okay, so data is being ‘weaponized’, and ordinary people and businesses are being caught in the crosshairs of cyber warfare. A little bit frightening, but the good news is that savvy individuals like you can take steps to protect personal data and actively combat the creeping influence of juggernauts such as Facebook and Google.
Now that we’ve left you sufficiently spooked, you can get back to those demanding WhatsApp/Facebook/Instagram notifications (same company, by the way)…albeit, we hope, with a slightly altered [cyber] worldview!