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Shaun Friedle created an impressive piece of Javascript which can automatically defeat CAPTCHAs used by the Megaupload file hosting service. While their CAPTCHAs are particularly weak, it's an impressive Javascript feat that breaks into some new territory, namely Javascript-based optical character recognition. John Resig posted a breakdown of how the software works. Here's the quick summary:
- The HTML 5 Canvas getImageData API is used to get at the pixel data from the Captcha image. Canvas gives you the ability to embed an image into a canvas (from which you can later extract the pixel data back out again).
- The script includes an implementation of a neural network, written in pure JavaScript.
- The pixel data, extracted from the image using Canvas, is fed into the neural network in an attempt to divine the exact characters being used - in a sort of crude form of Optical Character Recognition (OCR).
Shaun designed the software as a Greasemonkey script that will break CAPTCHAs for Megaupload and automatically trigger a download. The code is designed specifically for this CAPTCHA style, but there's no reason why the getImageData trick combined with a alternate OCR implementation couldn't be used to solve for other systems. This is pretty fascinating stuff.
Is there a better (more convenient, harder to cheat) way to prove humanness? What else could you make in Javascript using OCR, neural nets, or per-pixel image processing?
Megaupload Auto-fill CAPTCHA
MuCaptcha Online Demo
OCR and Neural Nets in JavaScript - John Resig
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Bluetoothkiwi documents his LEGO Mindstorms Swimming Pool Insect Terminator (SPIT) - it's a great example of the process of problem-solving.
Swimming Pool Insect Terminator (SPIT) is a special self powered autonamous floating robot that locates and destroys small clusters of bugs that float on the top of swimming pools. We used LEGO MINDSTORMS to build this. LEGO TECHNIC wheels are used as floats. The only non TECHNIC part that was used in this project is a can of inspect spray. The robot uses the light sensor to detect the presence of insect cluster while the Ultrasonic sensor is used to avoid bumping into the side of the pool by telling the steering motor to turn. When the Light sensor detects a cluster of bugs it tells a motor to push the button on a can of Insect spray. Another motor is used to power the SPIT forward. The project was a success and we learned a lot from it - though there are still a lot of room for improvements.Read more | Permalink | Comments | Read more articles in Kids | Digg this!
I have the distinct honor of editing this year's edition of Best Of Technology Writing, which has in past years featured many BoingBoing regulars. We're putting together the final submissions, and while we have a great supply of magazine writing to choose from, the blogosphere pile seems a little thin to me. So I thought it might be a nice end-of-year exercise for all of us to think back on the blog posts from 2008 that most intrigued and inspired us. Slightly longer posts will be more likely to make it into the collection, but who knows -- perhaps there's a particularly momentous tweet that deserves a place in the 2009 book. Obviously, posts that originated here at BoingBoing will have a special place in my heart. So feel free to share amongst yourselves in the threads below: what was the most memorable blog post you read last year? Surely, some of you remember last year...?
Dave Vondle from IDEO wrote in to tell us about a cool project they are working on with Bug Labs. From their introductory post:
We're thrilled to be working with Bug Labs to make this great product even better. We are also prototyping a new, open way of working that we hope will combine the expertise of Bug Labs engineers, IDEO designers, and the BUG community throughout the design process.
This is a quick project with a focused objective: re-envision the interaction with the BUGbase, specifically the display and buttons. We want to hear from you! Share your thoughts about the current BUGbase interface and your ideas for making it better. How are you using your BUGbase interface? How do you wish you could use it? In return for your feedback, we'll be regularly posting updates on our progress, as well as the end results. We, of course, welcome your thoughts at any point.
They've got a few concepts up (one of them is shown in the video at the top of this post), and have gotten some good feedback. BUG+IDEO Deep Dive Exploration : BUGbase UI

Here are some of my favorite posts from CRAFT this week:
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A reminder to the US CBP: what you do to foreigners, their governments are apt to do to Americans. When you treat foreigners this way, you put Americans who go abroad in harm's way.
Mercy dash family denied entry to US (Thanks, JK!)Over the next 24 hours, officers questioned the Thornleigh taxi driver and his aged-care worker wife, patted them down and searched their luggage before sending them to a detention centre in a caged van. They were then taken to a hotel with other detainees at 2.30am to sleep with armed guards by their bedside before being woken at 4.30am and put on a flight back to Sydney...
"They treated us like terrorists," Mr Rabbi said. "We are Australian citizens. Why did they have to keep us in a detention centre? Why did they have to lock up my kids?"
Mr Rabbi says that when he explained he was in the US to visit his father, the officers threatened him.
Despite producing the family's $6400 return tickets, dated February 5, he says the officers accused him of attempting to illegally stay in the US...
The family, tired and hungry after their 18-hour flight from Sydney to Los Angeles via Melbourne, were given minimal food and drink during their time at the airport.
"We were given no food, apart from a few biscuits," Mr Rabbi said.
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Flickr user 'xddorox' has a nice and simple DIY hard saddlebag for your bike. It's a great use for an old plastic jar, and makes a fairly watertight enclose. Just remember to take your stuff with you since it doesn't have a lock.
More about DIY Hard Saddle bag for your bike [Bike Hacks]
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<img src="http://blog.makezine.com/MAKE_PT1411.jpg" height="588" width="588" border="0" hspace="4" vspace="4" alt="Make Pt1411
Retro family bike
Gang, today is the last day to enter "The SPEAK VISUAL contest at the NVIDIA Modification Station with MAKE" - You can check out all the entries here or the slideshow above... It's really easy, finish up your mod, add your photos (tagged with modificationstation) or just enter some digital designs... Rules & more here.

The CultCase has a great article rounding up 20 great ways to reuse egg cartons. I really like the toy camera, cat beds, and Volkswagen Truck. What's you favorite one? Better yet, do you have another use for a used egg carton? If so, share your idea in the comments. Thanks!
More about 20 great ways to reuse egg cartons [Neatorama]
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DIY: Egg Carton Pendant Light
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Hospirestaurant - Hospital Themed Restaurant in Latvia (Thanks, Marilyn!
The food is served in flasks and operating-room’s dishes and isn’t that cheap (7 and more lats per meal), but this is a bizarre experience that is worth breaking the bank. Besides, the place is owned by local doctors, but unfortunately, the president of Latvia, who is also a doctor, declined his appearance at the opening once he realized how weird this place actually is.
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Here's an update on an earlier post we did here about the "Beacon" installation currently on display until February 20th at the LightWave festival in Dublin, Ireland. "Beacon" is a kinetic light installation that tracks visitors movements through the space. The project was built with existing industrial products, custom hardware to control the motorized lights, and thermal imaging cameras to track visitors moving between them on the floor. The tracking was implemented with a bespoke control system to coordinate an interactive experience for visitors. Check out the video above to see it in action.
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Kyrgyzstan is under a massive denial of service attack.Link to report.Last week IWMP received a phone call from a colleague in Central Asia. Apparently, Kyrgyzstan is under a massive denial of service attack. Three of four ISPs have been taken down, and their upstream providers in Russia, and Kazakhstan are refusing to pass traffic because of the scale of the attacks. At this stage, the motivation appears to be political, and follows several political/mass media websites which have been blocked in the past two weeks by Kyrgyz authorities. The suspicion is that the current DOS attacks are commercial -- commissioned and similar to those we reported back in 2005.
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If you're driving through the rural town of Panama, N. Y., and forgot to wear a watch, you're in luck. Engineer John Miktuk used scrap LEDs and a GPS to assemble a giant clock on the side of his garage.
The timekeeper began as a sign of self-appreciation. Miktuk had a bunch of red LEDs and resistors laying around, scraps from the auto industry, so he drilled holes through the galvanized steel cladding of his four-car garage, plugged them with the lights, built the necessary circuits, and flipped the switch to reveal his surname in glowing letters along a 30-foot wall facing the road.
When it dawned on him that he had plenty of room and materials to add another line of text, Miktuk decided to display something more useful: the time. He circuited together another round of LED-resistor series and connected these to a microcontroller, programmed to ferry information from a GPS unit to the LEDs.
Miktuk mounted a GPS unit 20 feet above the ground and linked it to the microcontroller via a long serial cable. The cable transmits the GPS unit's time and location (calculated from a satellite signal) down the line to the microcontroller, which then directs the appropriate LEDs to turn on. The chip's software even calculates local time from the GPS unit's UTC (Coordinated Universal Time) reading and corrects for daylight saving.
Now anyone with an inkling can build their own LED-GPS clock. In July, Miktuk released "GPS Time on YOUR Garage," a kit for sale on his website for around $300. Although the garage clock is plugged into his home utilities, Miktuk estimates that the entire array (now shining bright green) costs him just $25 a year to power -- and it's been running for four years and ticking.
When asked what motivated him to build the clock, he says, "Nothing compares to the sense of accomplishment when a DIY project is finished and working. Except the thrill of the next one. And the next one ..."
From the column Made on Earth - MAKE 7, page 25 - Megan Mansell Williams.
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Helicopters for Everybody (Jan, 1951)
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Rex Hammock: "It's hard to convey to my kids how radically different the Mac was from any consumer-oriented computer that came before."
2a. I almost put Guy here again, so I could say it's like "Location, location, location" -- but I thought that would be too much, even for Guy.
There's a weekly address from our new president (you can check that out here) - but I wanted to pull out some of what might be interesting for the makers (and the soon-to-be makers out there). Post up in the comments about what you think individuals can do, what companies can do and what "we" can do as some of these proposals get approved - a reminder, we're not a political site, keep it on topic, constructive and solutions-based, thanks gang. The largest weatherization program in history seems very "DIY" to me, modernizing 75% of federal buildings and two million homes - have you weatherized your home? Oddly enough, I saw that Home Depot's twitter account had this suggestion a few weeks ago...
To accelerate the creation of a clean energy economy, we will double our capacity to generate alternative sources of energy like wind, solar, and biofuels over the next three years. We’ll begin to build a new electricity grid that lay down more than 3,000 miles of transmission lines to convey this new energy from coast to coast. We’ll save taxpayers $2 billion a year by making 75% of federal buildings more energy efficient, and save the average working family $350 on their energy bills by weatherizing 2.5 million homes.
Finally, we will rebuild and retrofit America to meet the demands of the 21st century. That means repairing and modernizing thousands of miles of America’s roadways and providing new mass transit options for millions of Americans. It means protecting America by securing 90 major ports and creating a better communications network for local law enforcement and public safety officials in the event of an emergency. And it means expanding broadband access to millions of Americans, so business can compete on a level-playing field, wherever they’re located.
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Spurring a Clean Energy Economy
- Doubling renewable energy generating capacity over three years. It took 30 years for our nation to reach its current level of renewable generating capacity – the recovery and reinvestment plan will double that level over the next three years. That increase in capacity is enough to power 6 million American homes.
- Jump-starting the transformation to a bigger, better, smarter grid. The upfront investments and reforms in modernizing our nation’s electricity grid will result in more than 3,000 miles of new or modernized transmission lines and 40 million “Smart Meters” in American homes.
- Weatherizing at least two million homes to save low-income families on average $350 per year and modernizing more than 75% of federal building space, saving taxpayers $2 billion per year in lower federal energy bills. Today, the federal government is the world’s largest consumer of energy. The recovery and reinvestment plan will make an historic investment in upgrading the federal building stock that will save taxpayer dollars and help catalyze a green building industry.
- Launching a Clean Energy Finance Initiative to leverage $100 billion in private sector clean energy investments over three years. The finance authority will provide loan guarantees and other financial support to help ease credit constraints for renewable energy investors and catalyze new private sector investment over the next three years.

MAKE subscriber Charles writes in about his electric shopping cart project called the "LOLrioKart". The cart is equipped with "a cache of massive aircraft wet-cell NiCd batteries" and a 15 hp electric motor. The website has a nicely documented build log, which is great for anyone looking into making an electrically driven vehicle. Thanks Charles!
What originally started as a whimsical attempt to strap a set of large nickel cadmium batteries, discovered in a dusty back room, to something - anything - has turned into a full-fledged ambitious engineering project.
More about LOLrioKart: Electric shopping cart racing
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