These Rorschach Ink Tests Could Replace the Good Old CAPTCHA

The CAPTCHA is a wonderful thing, but it's not without its failings. And as hackers get better and better at cracking them, a team of CMU engineers are proposing an alternative: Inkblot tests.

It's called a GOTCHA (of course), and it stands for Generating panOptic Turing Tests to Tell Computers and Humans Apart. The test was developed by three CMU researchers named Jeremiah Blocki, Manuel Blum, and Anupam Datta, who wanted to capitalize on our natural predilection to visual pattern recognition. Their test is a variant of a HOSP, or a Human-Only Solvable Puzzle, which defend against offline dictionary attacks by requiring human interaction with each password. In other words, these puzzles defend against attacks where hackers will try millions of different passwords in an attempt to access your account.

Here's how GOTCHA would work: When a user signs up for a service—a new email account, let's say—they'll be shown a series if inkblot tests and asked to describe them in a few words. Then, when they come back a few days later to sign in, they're presented with the same inkblot tests plus their original answers. They simply have to match up the answers with the correct images. That way, it's tougher for a computer to replicate not only the uniquely human ability to see visual patterns, but also to replicate that ability in the same way twice.

According to the team's October 7 paper—creatively titled GOTCHA Password Hackers!—the CMU team tested their design using a small sample of 70 through Amazon's Mechanical Turk. And while some participants didn't match their answers up correctly, there was good evidence that most users could trust their memories, and it's likely that the test could be tailored to be more consistent. More here.

It's Raining Diamonds on Saturn and Jupiter

We're a little late to the party on this one, but it's just too fascinating to pass up. A team of planetary scientists recently claimed that the mix of methane, carbon and lightning in Saturn's atmosphere is causing diamonds to be forged in the planet's atmosphere. Like, a lot of diamonds.

"The bottom line is that 1,000 tons of diamonds a year are being created on Saturn," Dr. Kevin Baines of NASA's Jet Propulsion Laboratory recently told the BBC. "People ask me, 'How can you really tell? Because there's no way you can go and observe it.' " Baines explained, "It all boils down to the chemistry. And we think we're pretty certain."

The chemistry is actually pretty simple. Saturn's atmosphere is mostly made up of hydrogen and methane, but when storms crop up, the lightning fries the methane, producing pure hydrogen and burnt carbon, a.k.a. soot. As the clouds of soot fall towards the planet, they clump together forming graphite, and as the pressure builds up closer to the planet's core, that graphite is compressed into pure diamond. So it's literally raining diamonds on Saturn. The scientists think the same thing might be happening on Jupiter.

Does this do us any good? Not right now. It's pretty hard to get to Saturn and Jupiter and to get down to where the diamonds are would be pretty tough since the pressure there is about 100,000 times what it is at sea level on Earth. And if we don't catch them fast enough, the diamonds eventually fall into the core and melt. Nobody wants a melted diamond necklace. More here.

Sleeping In Public Just Keeps Getting Easier

Like ostriches themselves, the Ostrich Pillow is enigmatic and generally fascinating. Who would use it? Is it appropriate for children? Is it a sex toy? Hard to say! But it looks downright comfortable for napping. The only issue is carrying it.

With that thing hanging out of your bag it's pretty obvious that you're getting read to rob a bank and then sleep it off. That's why Ostrich Light is lifting its head out of the sand.

Ostrich Light is a sort of fleece earband/VISOR combo by Studio Banana Things that you can wear around your neck and then move onto your face when it's time to pass out. Or you can keep it in a bag until you're ready to use it like a reasonable person. It looks soft and cushy, but also packable which is the whole point of this redesign. Ostrich Light raised more than $6,000 in its first day on Kickstarter and its goal is $40,000 (£25,000).More here.

This Bronze Candle Will Burn Forever and Never Melt Away

Given how important it's been to our development, mankind will always be drawn to open flames. But if you're tired of buying tea light candles in bulk for a little bit of accent lighting,Fabien Gerlier's Caviar might be better suited to adding accent lighting to your home. Made of sintered bronze, the lamp stays lit without ever burning away.

So what exactly is sintered bronze? Think of it kind of like a metallic styrofoam, but instead of being composed of thousands of tiny granules of foam, it's made of endless tiny specks of bronze. And since the material isn't solid, it allows gas from a fuel reservoir to seep through, and that's what's actually seen burning, not the lamp itself.

Want to buy one? That's unfortunate, because the Caviar lamp is sadly just a thesis project by Gerlier who's working towards getting his masters in product design. But while you can't buy one now, there's no reason to think the lamp couldn't one day go into production. More here.

Adding a Little Heat Could Give Us a 40 TB Hard Drive in a Few Years

When it comes to cramming as much data as possible on a platter, hard drive manufacturers will use every trick in the book to maximize capacity. Including turning up the heat as TDK plans to do with a new technique that could deliver 40 terabyte hard drives by 2020.

In layman's terms, it's actually easier to induce and reverse a magnetic field—which is how data is written and read in a hard drive—as the temperature increases. So TDK has developed a laser system to temporarily heat the area where data is being written, which in turn allows them to squeeze more bits onto a platter.

The breakthrough that made this new approach possible was the development of a laser, which TDK refers to as a near-field light generator, that creates a beam that's just tens of nanometers wide—any larger and you risk erasing data around the area where it's being written. And for comparison, that beam's about 1/10 as wide as the lasers used to read a Blu-ray disk—so we're talking seriously tiny.

The technology could very well be the next big leap needed to push hard drive capacities to the next level, and TDK is confident it could be implemented in commercial products as early as late 2015. More here.

This Dongle Lets You Use Your Laptop's Keyboard With Your Phone

There are almost as many wireless Bluetooth keyboards on the market as there are Bluetooth speakers. But why spend money on yet another keyboard for your mobile devices when there's probably already a perfectly good one on your laptop? With this Bluetooth USB transmitter dongle from Buffalo, the keyboards you already have can also work on your smartphone or tablet.

Using a small application that runs under OS X and Windows, you can choose to have your computer's keyboard work with your PC, or re-route every keystroke to a mobile device connected over Bluetooth instead. It's that easy, and for $43 it means you don't have to travel with a separate keyboard. And as an added bonus, your laptop's tilting display makes for a perfect smartphone stand when you're pounding out longer messages.

Of course, why anyone would actually need to type on their smartphone or tablet while their laptop is out and powered up is another question, so perhaps this is a solution still looking for a problem to solve—but it's still a neat trick. More here.

The Only Acceptable Way To Shovel Food Into Your Mouth

Your parents probably weren't too keen when you were cramming food in your mouth at the dinner table like a feral child. But you're all grown up now; you can eat however you want. And if that includes the use of a spoon that looks like the heavy-duty scoop you'll find on a construction site backhoe, so be it.

The only problem with the $10 Dinner Digger is that you might have a hard time cramming it into your mouth. But you lived off Doritos and Fanta through four years of college, as far as dining challenges go, this is a tiny speed bump—not a brick wall. With the right angling you can simply dump a massive scoop of corn flakes right into your gaping maw. More here.

Disney Lets You Feel Textures On a Touchscreen By Zapping Your Fingers

In an attempt to give touchscreens another level of interactivity, researchers at Disney have come up with a remarkable way to generate tactile feedback as fingers slide across a smooth glass display. And all without deforming or changing the shape of the display in the process. Imagine a touchscreen keyboard where you can physically feel every key and you'll realize the potential of this research.

So how is such sorcery even possible? The researchers realized that the sensation of feeling a bump on a surface largely came from the skin on a fingertip being pulled and stretched as it moved across the raised area. And it turns out that this same sensation can be artificially created on a perfectly flat surface using electrovibration to generate electrostatic forces that create friction against a moving finger.

The other half of this breakthrough is a custom algorithm developed by Disney's research team that generates these frictional forces on the fly, based on what's being displayed on screen. So a stack of DVD cases would feel like a series of bumps, where as a ball would feel more like a large gradually curved surface. The technique is basically fooling the brain into thinking its experiencing something it really isn't, but the results are apparently remarkably convincing.

And the applications for this technology go well past just a cute interactive picture book that kids can also touch. This could make typing or playing joystick-based games on a phone or tablet actually enjoyable, and it would most definitely revolutionize how those with visual impairments use mobile devices. More here.

This 3D-Printed Web of Plastic Caps Turns Water Bottles Into a Vase

If your recycling bin overfloweth with empty plastic water bottles and you're just too lazy to take them to the curb, why not turn them from an eyesore into a lovely centerpiece with this 3D-printed web of bottlecaps? All you need to do is scrounge up twelve similarly sized bottles and you've got yourself a one-of-a-kind vase that can hold an entire bouquet of flowers.

Available in black or green, the Screw You Vase does require you to add flowers and water for your centerpiece to take shape, but that's it. Well, flowers, water, and $175 since after all these are 3D printed which is a time consuming process. More here.

Keep Your Desk Clutter-Free With These Clever Magnetic Doodads

Both holders are handcrafted from maple and walnut wood, and can be applied using the accompanying adhesive-backed washers. That way, the holders will lie flush with whatever surface you stick 'em on. While you could stick any metal pen to the holder, DropCatch does provide you with a Zebra-designed pen and pencil, which is a nice little touch.

Of course, neither of these things are really necessary—a headphone holder actually seems like a little more trouble than its worth. But they sure are pretty. You can pick up the headphone holder and pen holder for $20 and $35, respectively. More here.

Flexible Displays Don't Mean Flexible Phones

LG unveiled the "world's first flexible OLED panel for smartphones" on Monday morningand bragged about how products with "enhanced performance and differentiated designs" would follow next year. A fully flexible smartphone is probably not going to be among those exciting new things, however.

Flexible displays are new and exciting, and there's no reason to trash talk them. But the arrival of flexible displays does not equal the arrival of flexible devices. In fact, there are still some pretty legitimate hurdles to clear before such a thing would be possible. The guts of a smartphone aren't exactly designed to be twisted, bent or rolled up, as some might like. The battery, in particular, is not an easy part to make flexible. CNET's Jessica Delcourt listed a few reasons why flexible phones were a long ways off earlier this year and also highlighted other challenges of flexible electronics like the extent to which they should be flexible and the inevitably prohibitive price. That's just inevitable for now, though. They'll get cheaper.

None of this means that LG's breakthrough isn't impressive or important. The appeal of a flexible display for the time being is to build curved phones which most people expect LG to showcase in a few months if Samsung doesn't beat them to the punch. The new display does look pretty awesome in the meantime. It's built on plastic substrates instead of glass which makes the flexibility issue a little less of an issue and is so thin—0.44 millimeters thin—that it rivals even the non-bendable displays currently on the market. LG also brags that it's the lightest display in the world, weighing in at a mere 7.2 grams for a six-inch display. And since it bends, it won't shatter and break as easily as a glass display, though it might be prone to scratches. More here.

This Leaked Manual Lists Literally All the Nexus 5's Specs

Nexus nerds, we may have just hit the jackpot. Android Police just got its hands on what appears to be a leaked service manual for the as-yet-unreleased Nexus 5. If this is real, we now know everything about the Nexus 5. Every. Thing. OK, except price.

The document—which came to Android Police's attention via anonymous tipster—is some 281 pages long, but fortunately Android Police has already dug out the really juicy bits:

• 4.95" 1080p display
• 32GB internal storage
• 2GB RAM
• Snapdragon 800 at 2.3GHz
• 8MP OIS rear camera, 1.3MP front camera
• 2300mAh battery
• Sensors: Accelerometer, Gyroscope, Compass, Proximity/Ambient Light, Pressure
• Micro SIM slot
• Notification light
• Wireless charging (duh)
• NFC (duh)

Now of course, as with any leak it's important to take this with a grain of salt. It could all be fake. But god damn look at that thing! There is so much data here. It's seems virtually impossible that this is bogus. If it's a fake it's an ABSURDLY detailed one.

Of course there are still other possibilities, like LG keeping false manuals on-hand for leaking, or Google/LG purposefully leaking a fake manual as some sort of cruel prank. But so far we've got no good reason to suspect this isn't accurate despite its status as a "draft."

There was one little discrepancy Android Police found, which is that the Bluetooth is listed as 3.0, when it'd be absurd for it to be anything other than Bluetooth Low Energy (i.e. 4.0). So that's either a bummer or a mistake.

Only time will tell, but in the meantime this is prooobably a pretty good guess at what we'll be seeing soon. More here.

Microsoft Asked HTC to Put Windows Phone in HTC Android Phones

According to Bloomberg, Microsoft has asked HTC to put Windows Phone in more HTC phones. Specifically, HTC Android phones. The report says that the head of Microsoft's operating systems unit Terry Myerson asked HTC last month to "load Windows Phone as a second option on [Android] handsets."

Apparently, Microsoft has discussed either cutting or even removing the licensing fee that comes with Windows Phone to make it a more attractive option for HTC. It smells like desperation and well, it sort of is. But Microsoft needs to shake up something in order to get Windows Phone in more hands. The talks with HTC are still in its early stages so no one is sure what the deal will end up looking like. Bloomberg says:

The technical details have yet to be ironed out. It wasn’t clear whether an HTC phone would run Windows and Android at the same time, or let users choose a default.

Seeing Windows Phone and Android on the same phone at the same time would just be crazy. Seeing a phone like the HTC One run Windows Phone would be quite awesome. HTC has made Windows Phones before (like the 8X) but it's clear most of its efforts have been dedicated toward Android phones. More here.

"I'm the Actor Who Provided the Voice for Siri"

Siri has provided iPhone users around the planet with everything from weather forecasts to restaurant reviews, whilst fending off dumb-ass questions along the way. But if you ever wondered who whispered all those sweet nothings, here's your answer.

This woman claims to have voiced the original version of Siri, which appeared on the iPhone 4S back in October 2011. Her name is Susan Bennett, and she lives in suburban Atlanta. While she won't reveal her age, she admits she fell into voice acting "by accident" in the 70s.

The arrival of a new Siri voice in iOS 7 means that Bennett is able to step forward and reveal herself to the world. And, if you're skeptical that she's the real deal—which you perhaps should be—co-workers and audio-forensics experts say they're "100 percent" confident it's the case, reports CNN.

In the video embedded below, Bennett talks about the gig, what it entailed, and how she was forced to keep the fact a secret. Until now. More here.

Your Instagram Feed Is About to Get Ads

Instagram's been planning this for a while, but now your Insta-feed is officially no longer just yours. Over the next few months, you'll start seeing photos and videos from #bold #brands all up in your stream of sepia-toned pics.

In its announcement, Instagram claims to want to make the ads "feel as natural to Instagram as the photos and videos many of you already enjoy." Which is probably true. With the speed most people scroll through their feed, it's doubtful they'll really notice that another vintage shot of a sunset was actually posted by Clorox. More here.

This SD Card Is Hiding a Mifi Inside

The last thing you want to do after buying yourself a sleek, ultra-slim laptop is muck up its lovely form factor with an ungainly mobile WiFi hotspot hanging off a USB port. So taking inspiration from the Eye-Fi, Huawei has cooked up its own SD card that's gutted to make room for a nano SIM slot and a HSPA+ 3G radio to give your laptop mobile internet wherever you roam.

You'll obviously lose the functionality of your laptop's built-in SD slot as long as you want to stay connected, but occasionally hooking up your camera over USB to offload photos is a small price to pay for a MiFi-like device that's almost impossible to lose. More here.

KFC Spent Two Years Making a Take-Out Container That Fits Cupholders

In an effort to bolster its standing amongst the fast food giants, KFC is introducing what is the easily one of the greatest innovations in take-out containers since the pizza box. The fried chicken chain's new snack-size Go Cups are specifically designed—after two years of development—to easily sit in your vehicle's cup holders, letting you dine without having to pull over and stop.

Billed as mini value meals, the Go Cups will sell for just $2.49 apiece and come in five different varieties that include varying mixes of chicken wings, chicken fingers, and chicken sandwiches with potato wedges on the side across the board. It's a little unfortunate to see that KFC isn't also including little shot glasses of its neon green coleslaw or gravy, but if cups of fried chicken can become a reality, who's to say what the future does or doesn't hold? More here.

Flexible Folding Flat Kitchen Utensils That Do More Than Just Scrape

It doesn't matter what you're buying, everyone wants to get as much bang for their buck as possible. And what looks like a set of three pieces of plastic cookware actually turns into six with nothing more than a gentle squeeze. It's like having the Transformers in your kitchen, minus the epic Michael Bay level of destruction.

Made from food-grade nylon and flexible silicone so they're dishwasher safe, these flat spatulas—sold separately at $16 a pop—easily transform into a spoon, a slotted ladle, and a spaghetti scoop. Which means that not only are they extra-functional, they also easily slip into even the most jam packed of utensil drawers. Now if only the toaster and tea kettle crowding your kitchen counters could do that. More here.

Researchers Bioengineer Bacteria That Can Produce Gasoline

Korean researchers have engineered a new strain of E. coli that can produce a suitable substitute for gasoline. And as they quite rightly point out, bacteria that poops out petroleum could be some valuable shit.

Digging up fossil resources carries tremendous environmental, monetary, and geopolitical costs, which means figuring out a way to feed the world's huge addiction to gasoline without unearthing crude could have a tremendous impact.

Bacteria, meanwhile, has already proven itself capable of amazing things. It's responsible for making your booze boozy, and in recent years it has been used to produce everything fromgold to diesel fuel. When it comes to producing biofuels, we're probably most familiar with bacteria that produce ethanol, but as the Korean researchers point out in a new study published in Nature, petroleum has a 30-percent higher energy content than traditional biofuels.

The new bioengineering process leverages existing E. coli strains to produce short-chain Alkanes molecules, which they claim is a chemically identical replacement for the combination of short-chain hydrocarbons commonly known as gasoline. In other words, you could put this bacterial excretion into your car and it would run. The WSJ reports:

When the modified E. coli were fed glucose, found in plants or other non-food crops, the enzymes they produced converted the sugar into fatty acids and then turned these into hydrocarbons that were chemically and structurally identical to those found in commercial fuel...

Unfortunately, as the WSJ points out, one liter of glucose produces just 580 milligrams of gas, which is a highly unfavorable yield to say the least. The tech's too new to power cars anytime soon, but it's an important step towards motoring the highways, powered by poop. More here.

Watch Every Model of iPhone Get Speed Tested at the Same Time

Ever wonder if your iPhone 4 really was weirdly slow? Or if iOS 7, despite its bells and whistles, just has a longer boot time than your old 3G? Well wonder no longer. You're about to find out for sure.

EverythingApplePro ran an absurdly comprehensive speed test using every iPhone ever made (and a whole bunch of hands). The results might surprise you.