Monday, November 21, 2011

Sony clamps down on game sharing

UK gamers can no longer play the same copy of a new PlayStation Store game on more than two devices.

On 18 November Sony cut the number of consoles and handheld devices that users can tie to their PlayStation Network (PSN) account from five to two.

The change only applies to games and other content bought via the PlayStation Store after 18 November.

The limits are believed to have been imposed to stop people sharing games with friends.

Sony unveiled the changes via a blog posting in which it said that PS3 users will only be able to use their games on two activated PS3 consoles. Similarly, games for the PlayStation Portable will only be playable on two of the handheld gadgets.

This means that a single PSN account will be able to support a maximum of two consoles and two handhelds.

The electronics firm said it was setting up account management pages for PSN users through which they will be able to decide on which consoles or handhelds their games can be played.

Prior to the 18 November change, up to five different PlayStation consoles could be connected to a PSN account and used to play games. Many gamers used this to activate consoles of their friends effectively giving them free access to games.

Eurogamer news editor Wesley Yin-Poole said the change had not prompted a backlash.

"It's only a problem to those who share downloaded games and have multiple devices in the home, but that's a minority of users," he said. "Most players use a single PlayStation 3 and a single PlayStation Portable, if that."

He said it was a move intended to support the upcoming launch of the PlayStation Vita which will count as one of the activated devices.

The changes apply to gamers based in the UK, Australia, Ireland, New Zealand and the Middle East. However, it is thought the policy will soon be applied to other territories including the key markets of Japan and the US.



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Friday, November 18, 2011

World's 'lightest material' claim

A team of engineers claims to have created the world's lightest material.

The substance is made out of tiny hollow metallic tubes arranged into a micro-lattice - a criss-crossing diagonal pattern with small open spaces between the tubes.

The researchers say the material is 100 times lighter than Styrofoam and has "extraordinarily high energy absorption" properties.

Potential uses include next-generation batteries and shock absorbers.

The research was carried out at the University of California, Irvine and HRL Laboratories and is published in the latest edition of Science.

"The trick is to fabricate a lattice of interconnected hollow tubes with a wall thickness 1,000 times thinner than a human hair," said lead author Dr Tobias Schaedler.

Low-density

The resulting material has a density of 0.9 milligrams per cubic centimetre.

By comparison the density of silica aerogels - the world's lightest solid materials - is only as low as 1.0mg per cubic cm.

The metallic micro-lattices have the edge because they consist of 99.99% air and of 0.01% solids.

The engineers say the material's strength derives from the ordered nature of its lattice design.

By contrast, other ultralight substances, including aerogels and metallic foams, have random cellular structures. This means they are less stiff, strong, energy absorptive or conductive than the bulk of the raw materials that they are made out of.

William Carter, manager of architected materials at HRL, compared the new material to larger low-density structures.

"Modern buildings, exemplified by the Eiffel Tower or the Golden Gate Bridge are incredibly light and weight-efficient by virtue of their architecture," he said.

"We are revolutionising lightweight materials by bringing this concept to the nano and micro scales."

Robust

To study the strength of the metallic micro-lattices the team compressed them until they were half as thick.

After removing the load the substance recovered 98% of its original height and resumed its original shape.

The first time the stress test was carried out and repeated the material became less stiff and strong, but the team says that further compressions made very little difference.

"Materials actually get stronger as the dimensions are reduced to the nanoscale," said team member Lorenzo Valdevit.

"Combine this with the possibility of tailoring the architecture of the micro-lattice and you have a unique cellular material."

The engineers suggest practical uses for the substance include thermal insulation, battery electrodes and products that need to dampen sound, vibration and shock energy.



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Robots set out to sample the seas

Four robots have set out on an epic 33,000 nautical mile (66,000km) journey across the Pacific Ocean.

Created by US firm Liquid Robotics, the four are aiming to set the record for the longest distance at sea travelled by an unmanned craft.

Throughout their journey the robots will gather lots of data about the composition and quality of sea water.

The journey is expected to take about 300 days, and is designed to inspire researchers to study ocean health.

The robots were launched from the St Francis Yacht Club on the edge of San Francisco harbour on 17 November.

Initially the four will travel as a flotilla to Hawaii and then will split into two pairs. One will go on to Australia and the other will head to Japan to support a dive on the Mariana Trench - the deepest part of the ocean.

The robots manage to move thanks to interaction between the two halves of the autonomous vehicle. The upper half of the wave-riding robot is shaped like a stunted surfboard and it is attached by a cable to a lower part that sports a series of fins and a keel.

Sensor readings

Interaction between the two parts brought about by the motion of the waves enables the robot to propel itself.

Electrical power for sensors is provided by solar panels on the upper surface of the robot.

On their epic journey, the four robots will take sensor readings every 10 minutes to sample salinity, water temperature, weather, fluorescence, and dissolved oxygen.

About 2.25 million data points will be gathered during the voyage and the wandering route they will take passes through regions never before surveyed.

The data set will be fed back as it is gathered and then shared with anyone that registers their interest with Liquid Robotics.

The company is also seeking innovative suggestions about what to do with the data being gathered. The winning entry in this competition will win six months of access to the wave-riding robots to complete the research.

The wave-riding robots are veterans of ocean-going science and helped monitor the spread of oil during the Deepwater Horizon spill in the Gulf of Mexico. Before now the longest single journey they have undertaken was over a distance of 2,500 miles.



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Data spies raid Norwegian firms

Oil, gas and defence firms in Norway have been hit by a series of sophisticated hack attacks.

Industrial secrets and information about contract negotiations had been stolen, said Norway's National Security Agency (NSM).

It said 10 firms, and perhaps many more, had been targeted in the biggest wave of attacks to hit the country.

Norway is the latest in a growing list of nations that have lost secrets and intellectual property to cyber thieves.

The attackers won access to corporate networks using customised emails with viruses attached which did not trigger anti-malware detection systems.

Targeted attacks

The NSM said the email messages had been sent to specific named individuals in the target firms and had been carefully crafted to look like they had come from legitimate sources.

Many of the virus-laden emails were sent while the companies were in the middle of negotiations over big contracts.

It said user names, passwords, industrial drawings, contracts and documents had been stolen and taken out of the country.

The NSM believes the attacks are the work of one group, based on its analysis of the methods used to target individuals, code inside the viruses and how the data was extracted.

The agency said it was publishing information about the attacks to serve as a warning and to encourage other targeted firms to come forward.

"This is the first time Norway has revealed extensive and wide computer espionage attacks," the NSM said in a statement.

Singled out

It said it found out about the attacks when "vigilant users" told internal IT security staff, who then informed the agency.

However, the NSM said, it was likely that many of the companies that had been hit did not know that hackers had penetrated their systems and stolen documents.

Security firms report that many other nations and industrial sectors have been targeted by data thieves in recent months.

The chemical industry, hi-tech firms and utilities appear to have been singled out.



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Smartphone data tariff warning

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Mobile phone operators must do more to help people avoid getting unexpectedly large bills after going online, says the Communications Ombudsman.

The complaints watchdog says so-called data download bill shock is a serious and growing problem.

Chief Ombudsman Lewis Shand Smith says that is because it is becoming more common for people to download big files, like videos, onto mobiles.

He says that has led to a rise in the number of customers being affected.

Adam Barclay-Faulkner, who's 27, runs his own small business selling big, inflatable adverts in Staffordshire.

He says he makes the most of his mobile's unlimited data deal.

He said: "Mainly I use my mobile for Facebook to keep in touch with family and friends.

"I also send and receive a lot of work emails and watch the occasional video as well."

Big bills

Like many people Adam thought he was on an unlimited data deal with his mobile operator.

As can often be the case though, there was a limit which was in the small print of the contract.

Adam Barclay-Faulkner Adam says he got a bill for �160 more than he was expecting

When he went over that limit Adam started getting charged extra.

Adam says that led to a bill of around �200 instead of his regular monthly one for �38.

"We're in a recession and I don't have the money to just throw at things like this," said Adam.

The unintended overspend led to him being cut off until he could pay his bill.

He says that meant missed emails and lost work.

"I'm the main point of call in my business," he said. "It's really difficult to not have something for a few days before they decided to reconnect me after I'd paid it."

Advice

As technology improves it is becoming more coommon for people download bigger files.

Those inlcude songs, videos and emails with large attachments.

Communications Ombudsman Lewis Shand Smith thinks phone companies could do more to warn people but says they are doing nothing wrong under the current regulations.

He said: "Most mobile operators are playing by the rules, so that then begs the question are the rules what they ought to be?"

Customer satisfaction is always a priority and there are several ways people can keep track of exactly how much data they use

Big five mobile phone operators

He's calling on mobile phone operators to do three things.

"First of all, be very clear about what they mean by unlimited in the advertisements," he advised.

"Secondly, give advice to consumers so they know when they're reaching their limit.

"And thirdly, give advice on the amount of data that's being downloading."

In a series of statements the big five mobile phone operators said: "There are a variety of different tariffs and deals that let customers manage their bills effectively.

"Customer satisfaction is always a priority and there are several ways people can keep track of exactly how much data they use."

Depending on your download connection the amount of data you use for one song is roughly 3 megabytes, for a three-minute video it's 15 megabytes and for a half hour TV show it's around 350 megbytes.

Follow our technology reporter Dan Whitworth on Twitter



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Thursday, November 17, 2011

AP writers told off for tweeting

Associated Press has reprimanded some of its journalists for breaking news on Twitter before posting it on the wires.

The news agency issued the warning after some staff members tweeted that AP journalists had been arrested at the Occupy Wall Street camp in Manhattan.

An email from bosses followed reminding staff about AP's social media policies.

The incident has reopened a debate about how traditional media deal with the disruptive nature of social networks.

Twitter has become a breaking news service for many people but it lacks the traditional outlets' reputation for accuracy. Because anyone can break stories on the platform they do not always turn out to be correct.

While Twitter is an invaluable tool in newsrooms around the world, it has also forced news organisations, including AP, to draw up strict rules.

"If you have a piece of information, a photo or a video that is compelling, exclusive and/or urgent enough to be considered breaking news, you should file it to the wire, and photo and video points before you consider putting it out on social media," the AP policy reads.

After the recent incident in New York, AP's managing editor Lou Ferrara wrote an email to employees explaining that their first duty was to the agency not Twitter.

And executive editor Kathleen Carroll issued a memo saying much of the resulting "chatter" had missed the point.

"When we lose contact with a journalist, our main focus is making sure they are safe, no matter where they are. Sometimes, talking about it while things are still uncertain can endanger them," she said.

"It's not outlandish to think that a tweet that's taken by someone in authority to be opinionated or sarcastic could lead to one of our staffers being held longer than necessary."

She added that AP policies on using Twitter and other social media platforms were there "for good reasons".

Extinction

"Start Quote

To bury our head in the sand and act like Twitter isn't increasingly becoming the source of what informs people in real-time is ridiculous,""

End Quote Anthony de Rosa Social media editor, Reuters

But Anthony de Rosa, social media editor at Reuters, thinks that such policies may need to be overhauled.

He tweeted: "News agencies must evolve or face extinction."

He expanded the point in his official Reuters blog.

"The wire is still a huge part of our business and always will be. However, acting in a way that handcuffs us from doing our best work on Reuters.com and on social networks, which help drive traffic and extend our brand, is writing a death sentence for us as a future media company.

"To bury our head in the sand and act like Twitter (and who knows what else comes into existence next month or five years from now?) isn't increasingly becoming the source of what informs people in real-time is ridiculous," he wrote.

One of the biggest issues that corporations have to face is that Twitter and Facebook are used by employees for both personal and professional reasons.

Mr de Rosa believes this can improve news agencies' brands.

"Part of having your journalists on these platforms is giving them the freedom to be a normal human being, not a robot, a PR machine or a slave to the wire," he blogged.

Caroline Kean, a partner with law firm Wiggin, thinks social media policies need to take into account that people are writing on such platforms as both professionals and individuals.

"Employees of a news organisation have an obligation to break stories via their employer rather than to the world at large and it is easy to see that if a company's whole business model is built on breaking news then doing that on Twitter undermines that business," she said.

But if there are also personal reasons for tweeting, such as journalists being arrested, then common-sense can be applied.

"It is possible to write a personal tweet while protecting the agency story," she said.

The BBC has also had to consider the issue.

News website editor Steve Herrmann said: "We have guidance on the personal use of social media, for example staff should be careful that the information disclosed or opinions expressed do not bring the BBC into disrepute. It is based on common sense, and could almost be boiled down to 'Don't do anything stupid'".�

Cruel hoax

Mr Herrmann believes news organisations need to raise their game.

"I think the speed and immediacy of Twitter is something newsrooms are still coming to terms with. In BBC News we are looking at how to make sure we have the best systems to ensure our reporting is available as fast as possible across all our services, whilst maintaining our commitment to accuracy, and Twitter is certainly forcing the pace," said Mr Herrmann.

The corporation aims to get breaking news on both platforms at the same time although some stories, including exclusives by the BBC's business correspondent Robert Peston, have appeared on Twitter first.

Social media networks have proven their ability to distribute news at speed. Michael Jackson's death, for example, was widely reported on Twitter some time before traditional media caught up.

But reporting the deaths of celebrities carries its own health warning.

Earlier this month tweets began to spread about the death of Radio Clyde DJ Tiger Tim Stevens.

Eventually the DJ himself tweeted that he was "alive and well" and that the original tweet had been a "cruel hoax" that was particularly upsetting for his 91-year-old mother.



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AI moves closer with brain chip

Scientists are getting closer to the dream of creating computer systems that can replicate the brain.

Researchers at the Massachusetts Institute of Technology have designed a computer chip that mimics how the brain's neurons adapt in response to new information.

Such chips could eventually enable communication between artificially created body parts and the brain.

It could also pave the way for artificial intelligence devices.

There are about 100 billion neurons in the brain, each of which forms synapses - the connections between neurons that allow information to flow - with many other neurons.

This process is known as plasticity and is believed to underpin many brain functions, such as learning and memory.

Neural functions

The MIT team, led by research scientist Chi-Sang Poon, has been able to design a computer chip that can simulate the activity of a single brain synapse.

Activity in the synapses relies on so-called ion channels which control the flow of charged atoms such as sodium, potassium and calcium.

The 'brain chip' has about 400 transistors and is wired up to replicate the circuitry of the brain.

Current flows through the transistors in the same way as ions flow through ion channels in a brain cell.

"We can tweak the parameters of the circuit to match specific ions channels... We now have a way to capture each and every ionic process that's going on in a neuron," said Mr Poon.

Neurobiologists seem to be impressed.

It represents "a significant advance in the efforts to incorporate what we know about the biology of neurons and synaptic plasticity onto ...chips," said Dean Buonomano, a professor of neurobiology at the University of California.

"The level of biological realism is impressive," he added.

The team plans to use their chip to build systems to model specific neural functions, such as visual processing.

Such systems could be much faster than computers which take hours or even days to simulate a brain circuit. The chip could ultimately prove to be even faster than the biological process.



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Wednesday, November 16, 2011

Google unveils online music store

Google has launched an online music store in the US, which will allow devices running its Android software to buy, store and stream MP3 files.

EMI, Sony Music Entertainment, Universal and 23 independent labels are providing content to create a library of 13 million songs.

However, Warner Music Group has opted not to take part at this point.

The service poses a challenge to Apple's dominance of the sector. It launched its iTunes store in 2003.

The popularity of the iPod maker's mobile devices helped drive sales.

However, a new study by the research firm Gartner suggests that more than half of all smartphones sold between July and September ran Android. That accounts for more than 60 million devices.

By comparison Apple's iOS handsets accounted for 15% of the market over the same period, according to the study.

Social network

Google is also integrating its new service with its Google+ social network.

Users will be able to share songs with their Circles contacts who can listen to the full length of the tracks one time without making a purchase.

Songs range in price from 69 cents (44p) to $1.29 and come without DRM copy-protection. The search giant is also offering a different track free for download every day.

The firm announced it has secured exclusive content.

The rapper Busta Rhymes - who was at the launch event - is debuting his new studio album on the Android store. The Rolling Stones and Coldplay are offering previously unreleased live performances.

Google is also hoping to link with smaller artists through its new Artist Hub. Musicians can add their own page for a $25 fee and set their own prices. Google will take a 30% share of each sale.

The firm did not discuss any plans to offer Google Music outside the US.

Competition

Google is not the only tech company trying to make a splash in the music industry.

Blackberry launched its BBM Music service in the UK on Tuesday. The firm offers users 50 DRM-protected tracks of their choice for �4.99 a month.

Members can also listen to their friends' selections. The service is also live in the US, Canada and Australia.

Nokia is pursuing a different model, offering owners of its new Lumia 800 Windows Phone use of its Mix Radio app.

The software scans the users' music collections and builds a customised radio station from the firm's 15 million strong library.

Internet radio

Amazon already runs a cloud based music service.

The firm launched its new Kindle Fire tablet earlier this week which may drive further sales from the site.

Streaming subscription service Spotify is also expanding after launching in the US in July. It offers apps for Android, iOS and Windows Phone.

The other big player in the US is the internet radio service, Pandora, which tries to tailor its selection to each user's taste.

Despite all the competition, analysts say Google Music still has room to manoeuvre.

"It's not exactly innovative, but the reality is that Google will get success in the same way it has in other markets - by making the most of its strengths in search and Android, and it will keep chipping away," said Colin Gillis, technology analyst at BGC Partners.

The chief executive of the UK-based 7digital MP3 store added that others may benefit from the search giant's move.

"Google's long overdue entry in the market is welcome as the company has a special market role, in helping combat piracy through the power to control search listings, Adwords advertising and dodgy MP3 apps on the Android market, and also in showing consumers there is choice beyond iTunes," said Ben Drury.



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Intel shows off one teraflop chip

Intel has developed an accelerator chip capable of running at speeds of one teraflop, equal to one trillion calculations per second.

The firm showed off the chip, dubbed Knights Corner, on a test machine at a supercomputing conference in Seattle.

Computer power on this scale is used to solve a range of problems in fields such as weather forecasting, molecular modelling and car crash simulations.

The chip pits Intel against rival add-on processors from Nvidia and AMD.

Powerful computers

The Knights Corner chip acts as a co-processor - taking over some of the most complicated tasks from the computers central processing unit (CPU).

It packs more than 50 cores - or individual processors - onto a single piece of silicon.

The chip offers "double precision" processing which allows a greater amount of numbers to be represented at one time - resulting in faster calculations and more accurate forecasts.

Intel says the accelerator is also the first server processor to support full integration of the PCI Express 3.0 specification. The technology allows data to be transferred at up to 32 gigabytes per second to compatible devices - twice the speed of the previous generation.

"Collecting, analysing and sharing large amounts of information is critical to today's science activities and requires new levels of processor performance and technologies designed precisely for this purpose," said Rajeeb Hazra, Intel's general manager of technical computing.

"Having this performance now in a single chip... is a milestone that will once again be etched into HPC [high performance computing] history," he added.

"Start Quote

GPUs allow you to get results more quickly but will take longer to program so there is an interesting trade-off"

End Quote Martin Reynolds Gartner
Even faster

While Intel's co-processor relies on the same instruction set architecture as its popular x86 processors, its rivals are taking a different approach.

They are offering chips known as graphic processing units (GPUs) which are designed to carry out the calculations necessary to draw, colour and shade objects on the screen at high speed.

They specialise in processes that can be broken down into several parts, where the output of one calculation does not affect the input of another. This makes them particularly well suited for other tasks such as speech recognition and image processing.

However, developers need to code their software in order to take best advantage of GPUs.

By contrast, Intel's accelerator should be able to run existing applications at high speed without the need for further software development.

"Traditional supercomputers were built by putting thousands of processors in a room but in the last few years there has been a shift toward graphic processors," said Martin Reynolds, a vice president at research firm Gartner.

"GPUs allow you to get results more quickly but will take longer to program so there is an interesting trade-off," he said.

Nvidia specialises in GPUs and the chief executive of Intel's rival, Jen Hsun Huang, talked up the technology at the Seattle conference.

He said that GPUs were less complex than other processors, wasting less energy in moving data across chips.

Speeding ahead

Computer power has come a long way since 1997 when Intel showed off its first 1 teraflop supercomputer, which required nearly 10,000 Pentium II chips and filled 72 computing cabinets. It cost $55m.

In 2008, IBM's Roadrunner achieved petaflop speed, equal to 1,000 trillion calculations per second.

Ten years on, in 2018, Intel hopes it will be able to deliver so-called exascale-level performance, which is more than 100 times faster than currently available.

Nvidia is not so sure. In his keynote, Mr Hsun Huang said he did not think exascale performance would happen before 2035.

Mr Reynolds thinks that Intel has the edge over Nvidia, at least for the next few years.

"Intel has a technology advantage because its manufacturing processes can make transistors half the size and more efficient but Nvidia will catch up," he said.



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Facebook &#39;eliminates porn attack&#39;

Facebook said it has rid its site of most of the pornographic and violent images posted as part of a spam attack.

The social network blamed a browser vulnerability and said it was improving its systems to defend itself against similar attacks in the future.

Thousands of the website's 800 million users have complained about the pictures over recent days.

A source told the BBC that Facebook knew who was responsible - and it was not an Anonymous hacktivist.

The firm is understood to be working with its legal department to take action against the suspected attacker.

Browser exploit

Facebook said the spam attack worked via a "self-XSS vulnerability in the browser".

It added: "During this attack, users were tricked into pasting and executing malicious javascript in their browser URL bar causing them to unknowingly share this offensive content.

"No user data or accounts were compromised during this attack."

The firm said its engineers had built enforcement mechanisms to shut down malicious pages and accounts that attempt to exploit the vulnerability.

It also offered the following advice to help guard against further attacks:

  • Never copy and paste unknown code into the address bar
  • Always use an up-to-date browser
  • Use the report links on Facebook to flag suspicious behaviour or content on friends' accounts
Strange

Facebook allows children above the age of 13 to be members, and polices a ban against inappropriate images.

However, security experts said it was difficult for the firm to respond to this threat, bearing in mind it exploited a vulnerability in an unnamed web browser rather than the site itself.

They also said that the attack was very unusual because most other scams on the social network are designed to deliver a financial payout.

"This seems to be a purely malicious act. Facebook has a reputation for maintaining a reasonably family-friendly environment," wrote Chester Wisniewski, a senior security advisor at Sophos, on his company's blog.

"Hopefully whichever browser it is that has the flaw will provide a fix ASAP, but as we know most people are slow to apply updates regardless of which browser they use (except Chrome)."

"The flaw being exploited could likely be used against other sites as well if users can be tricked into pasting malicious javascript into the browser."



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