শনিবার, ২৯ নভেম্বর, ২০০৮

Greens could block plans for internet filter

     THE Australian Greens won't be supporting plans to introduce compulsory internet filters.

The Federal Government wants to introduce filters to stop people accessing X-rated material, child pornography and inappropriate material.

The plan is being opposed by the internet industry which says it opens the door to censorship of other material, including political views.

"We're very, very concerned that there's going to be a unnecessary clamp down on the internet and it has to be watched," Greens leader Bob Brown told the ABC today.

His colleague Scott Ludlam has been lobbying against the changes.

"He's working very hard with community groups in Australia to oppose the current proposals by the Government," Senator Brown said.

The Government needs the support of all seven crossbench senators – including the five Greens – to have draft laws pass parliament against coalition opposition.

বৃহস্পতিবার, ২৭ নভেম্বর, ২০০৮

Buy a Pentax K20D DSLR, Get a Free Optio A40 Digital Camera and Crossover Bag


Through Monday, December 1, capture a picture-perfect deal on Pentax at Amazon.com: purchase a qualifying K20D digital SLR and get a free, 12-megapixel Optio A40 point-and-shoot and a crossover DSLR bag (a total value of over $200). Simply add the products to your Shopping Cart and we'll apply the discounts at checkout. Applies only to purchases of products sold by Amazon.com, and does not apply to products sold by third-party merchants and other sellers through the Amazon.com site.

NASA tests 'interplanetary internet' in deep space


• New type of internet could be used between planets
• Successfully tested by sending pics over 32 million km to Earth
• Earth link: Race on to build world's first space elevator
A NEW type of internet that can send information in deep space has been successfully tested by NASA.
The technology sent dozens of images from a NASA spacecraft to Earth over 32.4 million km – almost ten times the distance between Earth and the moon.
This deep space internet may one day be used to transmit messages at the speed of light between planets.
So if humans do end up living on Mars, those of us left back on Earth may be able to Facebook them.
The new network, known as Disruption-Tolerant Networking, or DTN, is different to the internet used on Earth because it works over massive distances and is resistant to disruptions.
In space, planets and solar storms can disrupt communications and the sheer distance requires more time to transmit data.
For example, sending or receiving data from Mars takes between three-and-a-half minutes and 20 minutes at the speed of light, NASA said.
But unlike Earth's internet, the new network can "pause" during disruptions – it remembers what is being sent and can hold on to each packet of data until it finds the destination again.
"This is the first step in creating a totally new space communications capability, an interplanetary internet," Adrian Hooke, NASA's manager of space-networking architecture, technology and standards, said in a statement.
The new protocol was designed in partnership with Vint Cerf, one of the original internet pioneers and vice president of Google.
NASA said an "interplanetary internet" could enable many new types of space missions such as complex flights involving multiple spacecraft and ensure reliable communications for astronauts on the moon.
The International Space Station will begin testing DTN technology next year.

Facebook Project Palantir visualisation shows global interactions


• Facebook video shows messages sent around the world
• Visualisation the result of a "hackathon" creative contest
• Katy Perry and Sick Puppies help launch YouTube Live »
IT'S easy to forget how much the internet has revolutionised global communication in the past decade – until you see it with your own eyes.
A video released by social networking website Facebook shows how the web has made global conversations a part of everyday life.
Nicknamed Project Palantir, the visualisation maps interactions between users of the website to a three-dimensional globe. Messages from one user to another are shown as comets flying between countries.
Other types of activities such as status updates are shown on the globe as white dots rising into space from the location of the user.
The program was developed during the latest Facebook Hackathon event organised last month. "Hackathons" are collaborative events in which programmers get together to work on new ideas.
Facebook is considering making the application – created by Jack Lindamood, Kevin Der and Dan Weatherford – official, but at the moment it is only a demo, TechCrunch reported.
Other ideas suggested by users in the lead-up to Facebook Hackathon XI included video chat, support for Microsoft Office documents and the ability to change the appearance of profile pages.
In the past, ideas and programs made at the developer events have been adopted by Facebook and released officially – including Facebook Chat and the friend suggester.
"Facebook Hackathons have been the starting point for all sorts of new features that rapidly became mainstays of the site," said engineer Pedram Keyani in a blog post.
"Not every experiment pays off right away, but it’s a low-risk, high-reward setting that encourages engineers to bring to life some of the great ideas that are floating around here."
Many developers create unofficial visualisations of web data drawn from companies like Google to test their technical skills and make the information more accessible to everyday users.
One example is the unofficial Google city proximity visualisation, which attempts to show the strength of relationships between cities around the world by measuring the number of times they are mentioned together on the web.
Links
Facebook Project Palantir demo – http://www.facebook.com/video/video.php?v=37403547...
Facebook Hackathon blog post – http://www.facebook.com/note.php?note_id=31942383919
Google city proximity visualisation – http://www.bestiario.org/research/citydistances/

Blu-ray uptake could be stalled by recession

BLU-Ray won the format wars, but it hasn't taken off – and now there are fears a recession could stall its progress even further.
A scarcity of cheap Blu-ray video players combined with the effects of a recession are expected to delay take-up of the new, high-definition disc format in Europe, according to media research firm Screen Digest.
"A shortage of cheaper Blu-ray players means that the sub-$US300 ($465) machines that are already appearing on US shelves are unlikely to materialize in Europe this Christmas," Screen Digest analyst Richard Cooper said in a report.
"Combined with the recession, this means the format is unlikely to move much beyond the early adopter market this year," he said.
In Australia, a few sub-$500 Blu-ray players have entered the market, but the format still only accounts for 1.35 per cent of total DVD sales.
Toshiba's withdrawal of rival HD DVD video format early this year left the global market exclusively to the Blu-ray camp, led by Sony. But it caught component makers by surprise, which led to the shortage, Screen Digest said.
Sony said last week Blu-ray disc players would fall short of a worldwide target of 5 million units, most of which had been expected to sell in the US.
Experts say US electronics retailers are expected to slash prices of Blu-ray players, which sold for over $2000 in 2006, to as little as $232 after this week's Thanksgiving holiday.
Major film studios such as Warner Bros or Sony Pictures relied on video sales for 41 per cent of their movie-related revenues last year, Screen Digest said, with rentals generating a further 10 per cent.
European consumers are expected to spend 11.4 billion euros ($22.6 billion) buying videos this year, the research firm said, with Blu-ray accounting for just 3 per cent of that total.
By 2012, Screen Digest estimates the European Blu-ray market will be worth $10.7 billion, as broadcasters help high-definition viewing become the norm.

Dell’s New Conservatism: Zero Percent Financing

Just last week, Dell talked about turning conservative with its cash and financing programs due to the uncertain economy. Then on Wednesday, Dell began touting a zero percent financing program for large business customers. Go figure.
Software giants SAP and Microsoft were already hawking similar programs, as the technology companies try and use their cash stockpiles to make life easier on customers dealing with strained budgets and tight credit.
But Dell, even with $9 billion in cash, had been warning that it was going to be more conservative in granting credit. “We tightened our credit in general, and it has affected our ability to provide financing,” said Brian Gladden, Dell’s chief financial officer, last week.
Dell’s conservatism was reflected in its third-quarter results, which showed a company cutting as many costs as possible to boost profits while sales fell.
Along with the financing programs, Dell said Wednesday that it was slashing prices by as much as 20 percent on products such as servers and laptops.

বুধবার, ২৬ নভেম্বর, ২০০৮

Internal External Defibrillator A new device may offer a safer way to jump-start ailing hearts.


Six people in New Zealand have become the first to be implanted with a novel form of cardiac defibrillator that could radically change the way that people with life-threatening heart conditions are treated.

The new device, developed by Cameron Health, in San Clemente, CA, functions much as normal defibrillators do, shocking the heart to stop dangerous heart rhythms or to restart it if it stops beating. But unlike traditional devices--which are known as implantable cardioversion defibrillators, or ICDs--Cameron's device delivers a shock from outside the heart rather than from electrical leads inserted into it.

"We think there's a big advantage of not having to put the lead into the heart, because sooner or later that lead is going to have to come out," says Warren Smith, the cardiologist who carried out the implantations at Auckland City Hospital and Green Lane Hospital, in New Zealand.

According to Andrew Grace, a cardiologist at the Papworth Hospital, in Cambridge, England, who helped develop the device, patients with ICDs have a 20 percent chance of lead failure within 10 years. But leads are designed to embed themselves in the tissue of the heart, making them difficult to remove. If they don't come out easily, as happens in one in 50 cases, the only way to remove them is to perform open-heart surgery, says Smith. Lead replacement has a morbidity rate of between 2 and 5 percent, he says.

"It's unusual for the device itself to fail," says William McKenna, a cardiologist at the Heart Hospital, in London, England. "It's where the lead connects to the device or in the leads themselves that problems occur." Placing the leads can also be a problem, McKenna says, because if they are inserted into scar tissue caused by a previous heart attack, they may not deliver shocks effectively.

But until recently, placing the leads outside the heart just wasn't possible, says John Hunt, vice president of Cameron Health. "The technology wouldn't allow us to do it in the early days," he says. One reason is that shocking the heart from a greater distance requires more energy. But supplying that energy resulted in devices too bulky for surgical implantation.

Cameron's device, dubbed the subcutaneous-ICD, or S-ICD, uses leads placed just beneath the skin above the rib cage. Whereas a normal ICD would generate less than 30 joules per shock, the S-ICD generates 80 joules. Nonetheless, it's only marginally bigger than a traditional ICD, largely thanks to improvements in battery and capacitor technologies. The device itself sits beneath the skin below the armpit, instead of in the chest.

The new device has another advantage, says Grace: it provides a much better view of what's going on inside the heart. Electrical noise inside the heart can confuse ICDs with embedded leads. Currently, Smith says, one in three ICD patients suffers unnecessary shocks because the ICD misinterprets the state of the heart. That should be much less of a problem with the new device, he says.

Cameron's plan is to implant the device in another 55 patients before the end of the year. These will be monitored for a year, and data from the trial will be submitted to the FDA and European authorities.

Cameron believes that despite the additional demand for power, it can get a battery life of about five years out of its device, which is similar to that for existing ICDs. But this will vary on a case-by-case basis, depending on how often a patient has to be shocked, says Smith.

According to figures from Morgan Stanley, more than 200,000 new ICDs are expected to be put in people in 2008, nearly half of those in the United States. According to Grace, Cameron's S-ICDs are likely to have a huge impact on this market by giving patients and physicians more confidence. "I think they will redefine thresholds for implantation, bringing in far more patients," Grace says. "Physicians have rather been put off referring in view of the problems they have seen."

A Pair of Mini-Notebooks for the Style Set

year old—come two new devices that take the design concept of the netbook a step or two further.

If you aren’t familiar with the netbook idea, by the way, it’s a product that sits in size and price between a smartphone and a laptop computer. With screens that measure generally between 9 and 10 inches and semi-full size, if often cramped, keyboards, the netbook is built for on-the-go Web browsing and data grabs.

Dell Mini 9The Mini 9 netbook from Dell.

First up for good looks are Dell’s swank new cases for its Mini 9 and 12 netbooks, with designs created by urban artist/ultra-hip toy designer Tristan Eaton. If you have a comic book or Peter Max sensibility, these might be fitting. There’s a charge of $50 to upgrade from standard black to the Eaton graphics, available in a couple of flavors, including “The Muse” and “Stickers.” The Dell minis are available now.

Another new introduction is the Asus Eee 1002HA, similar to the company’s 1000H, except that the HA now wears a brushed aluminum casing on the lid, making it look more business-like, and measures less than an inch thin. There’s a ten-inch display, par for the course for most netbooks, and larger-than-most 160GB hard drive. Asus says five hours of battery power is the estimate.

As with all mini-notebooks, there are no optical drives installed, so forget enjoying CDs or DVDs. Asus launches the new netbook on Dec. 1 for $499.

Of course, these models aren’t for the user who wants the stealth look, but John New, a senior marketing manager for Dell, sees the trend toward funky clamshells as unavoidable. “The more mobile a device is, the more users identify with it,” says New. “It becomes a personal fashion accessory.”

E-Commerce Shrinks for First Time, Research Firm Says


Just as many Web retailers feared, online shoppers are being unusually frugal this holiday season.

During the first 23 days of November, according to a report to be released later on Tuesday by the research firm comScore, consumers spent $8.19 billion online, a 4 percent drop from the same period last year. That marks the first annual decline since e-commerce took off.

“We thought that things would solidify in November,” said Gian Fulgoni, chairman of comScore, who said gut-wrenching declines in the stock market and the auto industry crisis “spooked people who might have been thinking the worst was behind us.”

ComScore will also release its annual prediction for the entire holiday season on Tuesday, after some internal wrangling over whether to hold back the number because of too many unknown factors this year. The data firm is predicting that the overall holiday shopping season will improve slightly in December and end up at the same level as last year. In November and December 2007, the e-commerce market grew by 19 percent from the previous year.

“We have our fingers crossed that the stock market will not go through another 2,000-point meltdown and that the decline in gas prices will build up some cumulative buying power,” Mr. Fulgoni said. “However, if there is any more significant bad news just over the horizon, all bets are off.”

Other causes for limited optimism include buying activity spurred by anInternet-wide price war, and continued growth in products for “cocooning,” like video games, which can help people stay at home to weather the economic storm.

Digital Sales Surpass CDs at Atlantic


Since MP3s first became popular a decade ago, music industry executives have obsessed over this question: when would digital music revenue finally surpass compact disc sales?

For Atlantic Records, the label that in years past has delivered artists like Ray Charles, John Coltrane and Led Zeppelin, that time, apparently, is now.

Atlantic, a unit of Warner Music Group, says it has reached a milestone that no other major record label has hit: more than half of its music sales in the United States are now from digital products, like downloads on iTunes and ring tones for cellphones.

“We’re like a college basketball team on an 18-2 run,” said Craig Kallman, Atlantic’s chairman and chief executive.

At the Warner Music Group, Atlantic’s parent company, digital represented 27 percent of its American recorded-music revenue during the fourth quarter. (Warner does not break out financial data for its labels, but Atlantic said that digital sales accounted for about 51 percent of its revenue.)

With the milestone comes a sobering reality already familiar to newspapers and television producers. While digital delivery is becoming a bigger slice of the pie, the overall pie is shrinking fast. Analysts at Forrester Research estimate that music sales in the United States will decline to $9.2 billion in 2013, from $10.1 billion this year. That compares with $14.6 billion in 1999, according to the Recording Industry Association of America.

As a result, the hope that digital revenue will eventually compensate for declining sales of CDs — and usher in overall growth — have largely been dashed.

“It’s not at all clear that digital economics can make up for the drop in physical,” said John Rose, a former executive at EMI, the British music company, who is now a senior partner at the Boston Consulting Group.

Instead, the music industry is now hoping to find growth from a variety of other revenue streams it has not always had access to, like concert ticket sales and merchandise from artist tours. “The real question,” Mr. Rose said, “is how does the record industry change its rights structure so it captures a fairer percent of the value it creates in funding, marketing and managing the launch of artists?”

Ever since 1999, when the popular file-swapping service Napster was created, the music industry’s fate has been closely watched by other media companies — television, film and print publications like newspapers — whose traditional businesses are also under siege.

In virtually all these corners of the media world, executives are fighting to hold onto as much of their old business as possible while transitioning to digital — a difficult process that NBC Universal’s chief executive, Jeff Zucker, has described as “trading analog dollars for digital pennies.”

In each of these sectors, digital remains a small piece of the business. NBC has said it expects $1 billion in digital revenue by 2009; over all, the company’s revenue last year was more than $15 billion. Time Inc., the largest magazine publisher, with publications like Sports Illustrated, People and Fortune, said that about 9 percent of its $2.2 billion revenue in the first half of this year was derived from digital. In October, The New York Times Company said that online revenue accounted for 12.4 percent of its overall revenue.

On Tuesday, the Warner Music Group reported that digital revenue for the full fiscal year rose 39 percent, to $639 million, or 18 percent of the company’s total revenue. Over all, the company topped the expectations of Wall Street analysts — who on average were forecasting a small loss, according to Reuters — by reporting a net profit of $6 million in the fourth quarter. Revenue fell 1 percent, to $854 million.

Atlantic, whose artists include the Southern rapper T. I., the rock band Death Cab for Cutie and Kid Rock, appears to be the first of the major labels to claim that most of its revenue is coming from digital sales — and it says it has done so without seeing as steep a decline in compact disc sales as the rest of the industry.

This performance is sharply at odds with the trends in the music industry over all, where data show that sales of compact discs still account for more than two-thirds of music sales. Forrester Research does not expect digital music to reach 50 percent of the overall pie until 2011.

Analysts said they were surprised that Atlantic — with the highest overall market share in the industry this year — had such a high percentage of digital revenue.

“That’s a lot,” said David Card, a digital music analyst at Forrester Research. “That’s very high. No one is near that.”

The question, then, is whether Atlantic’s performance is an outlier or a signal that the music industry is reaching a pivot point as it moves toward a new business model.

“I think we’ve figured it out,” said Julie Greenwald, president of Atlantic Records. “It used to be that you could connect five dots and sell a million records. Now there are 20 dots you can connect to sell a million records.”

In making that transition to a digital business, the music business has become immeasurably more complicated. Replacing compact disc sales are small bits of revenue from many sources: Atlantic Records’ digital sales include ring tones, ringbacks, satellite radio, iTunes sales and subscription services. At the same time, record labels — Atlantic included — are spending less money to market artists. In the pre-Internet days, said Ms. Greenwald, “we were so flush, we did everything in the name of promotion.” Among the cutbacks are less spending to produce videos and to support publicity tours when a new album is released.

“Today you have to be like Leonard Bernstein,” said Mr. Kallman, “making sure everyone is hitting the right notes at just the right millisecond. The tipping point, if you will, is when everything converges and your timing with everything is impeccable.”

Movies in a Box: Blockbuster Offers Download Device


In May, Roku introduced a small $99 set-top box designed specifically to play movies from the Netflix service on your television.

On Tuesday, Blockbuster struck back with a set-top box of its own.

Blockbuster’s device comes with a potentially more attractive pricing plan than the Roku: The cost is $99, but that includes 25 movie downloads. (Additional movies will cost as much as $3.99 apiece.)

While Netflix and Blockbuster compete for DVD rentals, their approach to Internet movies is very different. Netflix includes access to an unlimited number of streamed films as part of its membership plans that cost at least $9 a month. However, the selection is limited and generally includes movies that are several years old.

Blockbuster already offers movie rentals online through the Movielink service it bought from a group of studios last year. New releases typically cost $3.99 to watch over a 24-hour period. The company has films from most of the major studios about a month after they are released on DVD.

For people who want an easy way to rent recent movies online, the Blockbuster device seems like an easy, low-risk deal: rent 25 movies at $2.50 each with no extra expense or continuing obligation. It is certainly better than the other pay-per-view boxes, Vudu and Apple TV, which typically offer the same movies but cost more than $200 upfront. Of course, Apple offers a more robust set of features and a link to the iTunes ecosystem. (Comparing this deal with the Netflix-Roku proposition is more complex because the pricing schemes, features and catalog of films are all different.)

Jim Keyes, the chief executive of Blockbuster, said he had very limited expectations for the set-top box, which is only available for purchase from Blockbuster.com. In the first year, he expected to sell tens of thousands of units. (Roku has sold hundreds of thousands of its boxes since its May release.)

Blockbuster, Mr. Keyes says, is offering customers many ways to rent and buy movies: vending machines, subscriptions by mail and digital downloads. But more than 90 percent of the movies it distributes are still through stores. Over the next five years, he said, DVDs and Blu-ray discs rented in stores will continue to be the bulk of Blockbuster’s business.

“Digital downloads are not going to dominate the industry tomorrow,” Mr. Keyes said, noting the limited capacity of Internet connections in the United States. (I wrote recently about how the market in South Korea, which has much faster Internet service, is shifting quickly to movie downloads.)

Mr. Keyes added that the growing interest in high-definition video, which can take five or six times as long to download as standard video, will make Internet movies even less attractive.

“You can drive to our local store and rent a Blu-ray disc in less time than it will take you to download a movie in high-def,” he said.

Since Blu-ray is taking off rather slowly, I asked Mr. Keyes why he believed that high-definition would really be a gating factor. He said that from what the sees, the propagation of high-definition television sets and television signals is driving an increasing demand for high-definition movies.

“It’s like driving in a 1998 vehicle after you have driven a 2008 vehicle with all the new features,” he said. “You don’t want to go back.” Mr Keyes added that he believed that consumers would be willing to pay a premium to buy and rent high-definition movies.

Blockbuster is using a set-top box made by 2Wire, a company that mainly provides equipment to telephone companies to offer high-speed Internet service over phone wires. The box was designed so that phone companies and other Internet providers can offer Internet-delivered video to television screens in an inexpensive way. (Telcos will pay about $100 for the box.)

For Blockbuster, the box is intended to download movies rather than stream them, as the Roku box does for Netflix. That offers a somewhat higher video quality. And 2Wire uses technology that can start playing a film before it completes downloading it. On very fast connections, the movie will start playing almost instantly. On slower connections, there could be a delay of five minutes or longer. The box has 8 gigabytes of flash memory, enough to store a few movies. That gives it more capabilities than the Roku box, but it doesn’t have a hard drive like the AppleTV box.

Blockbuster is considering adding other programming options to its version of the set-top box. And it is making its movie rentals available through other companies, yet to be announced, that will also deploy the 2Wire box. Like Netflix, Blockbuster also plans to put its movie rental service on other Internet-connected devices like Blu-ray players and high-end televisions.

শুক্রবার, ২১ নভেম্বর, ২০০৮

Digital Cameras Are Revolutionary Gadgets


One of the greatest new types of gadget to come into play recently is the digital camera. There are a lot of reasons why digital cameras are so much better than film based cameras, and they all come down to the computer technology that goes into digital cameras. Digital cameras can capture images on special chips that can pick up light and color and convert it into digital data. That digital data is then stored on some kind of computer storage device, which is most often based on flash memory technology these days, though in the past digital cameras have stored pictures on things like floppy disks as well (as preposterous as that may seem to us today). The flash memory can either be built into the camera or be a detachable form memory card or memory stick. Many cameras have combinations of both forms of storage media and pictures from both can be transferred onto a computer for editing, posting on the Internet, or printing out into the form of a more traditional photograph. One of the greatest new types of gadget to come into play recently is the digital camera. There are a lot of reasons why digital cameras are so much better than film based cameras, and they all come down to the computer technology that goes into digital cameras. Digital cameras can capture images on special chips that can pick up light and color and convert it into digital data. That digital data is then stored on some kind of computer storage device, which is most often based on flash memory technology these days, though in the past digital cameras have stored pictures on things like floppy disks as well (as preposterous as that may seem to us today). The flash memory can either be built into the camera or be a detachable form memory card or memory stick. Many cameras have combinations of both forms of storage media and pictures from both can be transferred onto a computer for editing, posting on the Internet, or printing out into the form of a more traditional photograph. The ability to transfer digital photos to a computer is what really makes digital cameras so much better than their film based ancestors. That's because there's so much that can be done with a photo once it's on a computer. For example, you can edit the photo to take out any of the dreaded "red eye" effect that still invariably shows up in some photos despite the best efforts of camera makers to avoid it to begin with. There are also plenty of other special effects that can be added to pictures though even relatively common software programs. For example, a picture can be made to look much older by adding a sepia filter to it and making it a little fuzzy so that it appears slightly out of focus. Besides changing the overall appearance of a digital photo, photo editing programs can also change what's in the photos. For example, it's possible to "clone" trees in a picture and paste them over utility poles. It's also possible to paste the heads of some people onto the bodies of other people or to put people into photographs in order to make it look like someone was in a place where they've never actually been. This can be especially useful for family reunion photos where not everyone could make it to the reunion. Once a photo has been loaded onto a computer and any editing has been completed, there are a number of things that can be done with it. For example, it's possible to post the photo on the Internet, either on your own web site or on a photo sharing site. It's also possible to email it to specific people, or you can print it out so that you can assembled an actual physical photo album. The thing that the digital camera does best though is allow its owner to take numerous photos and eliminate the ones that aren't up to his or her standards without the expense of developing all of those photos. In that sense, digital cameras are much more economical than film cameras, and better for the environment when you look at how toxic photo developing is. All of these features make digital cameras incredibly useful gadgets.

Internet Technology Threatened By Download Quotas


Everyone knows that the Internet is growing at an enormous rate. New services are constantly being made available, more households are getting broad band Internet access, and everyone is becoming increasingly reliant on digital media. While this enormous growth in Internet services and access to the Internet provides enormous opportunities, there is one thing that could derail the entire process: the fact that there just isn't enough infrastructure in place to support the strains that are being put on the Internet. In other words, there is a threat that in the very near future the demand for Internet services will outstrip the ability of the Internet to transmit data! Some Internet service providers are already trying to combat the problem by placing quotas on the amount of data that its subscribers can download within the space of a month. For example, Comcast has placed some unspecified limit on the amount of data that its subscribers can download. If a subscriber downloads excessively, that subscriber's service can be cut off. Of course, nothing in the company's literature (at least nothing that's easily accessible) states exactly what amount of downloading is considered excessive, but some subscribers have already lost their service because of this policy. Sprint also recently announced limits on the amount of data that can be transferred over the course of a month through its 3G mobile data service. This cap is five gigabytes per month, or three hundred megabytes when roaming. While this might not sound like much, Sprint reports that the vast majority (over 99 percent) of its mobile customers don't come close to downloading five gigs worth of data over the course of a month.

Keep them in low-risk situations

Make sure that all computers and robots never have to make a decision where the consequences can not be predicted in advance.

Likelihood of success: Extremely low. Engineers are already building computers and robotic systems whose actions they cannot always predict.

Consumers, industry, and government demand technologies that perform a wide array of tasks, and businesses will expand the products they offer in order to capitalise on this demand. In order to implement this strategy, it would be necessary to arrest further development of computers and robots immediately.

Six ways to build robots that do humans no harm

With the relentless march of technological progress, robots and other automated systems are getting ever smarter. At the same time they are also being given greater responsibilities, driving carshelping with childcareMovie Camera,carrying weapons, and maybe soon even pulling the trigger.

But should they be trusted to take on such tasks, and how can we be sure that they never take a decision that could cause unintended harm?

The latest contribution to the growing debate over the challenges posed by increasingly powerful and independent robots is the book Moral Machines: Teaching Robots Right from Wrong.

Authors Wendell Wallach, an ethicist at Yale University, and historian and philosopher of cognitive science Colin Allen, at Indiana University, argue that we need to work out how to make robots into responsible and moral machines. It is just a matter of time until a computer or robot takes a decision that will cause a human disaster, they say.

So are there things we can do to minimise the risks? Wallach and Allen take a look at six strategies that could reduce the danger from our own high-tech creations.