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Justin Sullivan/Getty Image

Driverless Cars Could Be Hacked With Stickers on Traffic Signs, Study Suggests

Justin Sullivan/Getty Image
Justin Sullivan/Getty Image

As driverless cars inch toward becoming regular sights on our streets, experts have started to warn that the connected cars could be vulnerable to hackers who can take control of the vehicles from a distance. Though most of these warnings are related to hacking into the internet-connected computer on board, there’s an analog way to disrupt the workings of a driverless car, too, as Autoblog reports. Researchers from across the U.S. recently figured out how to trick a driverless car with a set of stickers, as they detail in a paper posted on arXiv.org.

They examined how fiddling with the appearance of stop signs could redirect a driverless car, tricking its sensors and cameras into thinking that a stop sign is actually a speed limit sign for a 45 mile-per-hour zone, for instance.

They found that by creating a mask to cover the sign that looks almost identical to the sign itself (so a human wouldn’t necessarily notice the difference), they could fool a road-sign classifier like those used by driverless cars into misreading the sign 100 percent of the time.

Five different views of a stop sign with black and white block-shaped stickers seen from various angles and distances.

Evtimov et al., arXiv.org

In a test of a right-turn sign, a mask that filled in the arrow on the sign resulted in a 100 percent misclassification rate. In two thirds of the trials, the right-turn was misclassified as a stop sign, and in one third, it was misclassified as an added lane sign. Graffiti-like stickers that read “love” and “hate” confused the classifier into reading a stop sign as a speed limit sign the majority of the time, as did an abstract design where just a few block-shaped stickers were placed over the sign.

“We hypothesize that given the similar appearance of warning signs, small perturbations are sufficient to confuse the classifier,” they write.

The study suggests that hackers wouldn’t need much equipment to wreak havoc on a driverless car. If they knew the algorithm of the car’s visual system, they would just need a printer or some stickers to fool the car.

However, the attacks could be foiled if the cars have fail-safes like multiple sensors and take context (like whether the car is driving in a city or on a highway) into account while reading signs, as Autoblog notes.

[h/t Autoblog]

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Trash Talk: 7 Ways to Recycle Your Tech Gadgets
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Our tech gadgets’ lifespans are short. New smartphone models come out at least once a year, and it’s easy to want the latest and greatest computer, gaming console, or 4K TV—without considering what happens to our used devices.

The Environmental Protection Agency estimates that Americans generated nearly 3.4 million tons of consumer electronics waste in 2014 [PDF] and that only around 40 percent of that waste was recycled—the rest went to landfills or incinerators. The U.S. is also a top destination for e-waste from other countries [PDF]—and in turn, we export much of our e-waste to places like China and India. However, more manufacturers and recycling companies are now taking steps to ensure the e-waste they collect is handled responsibly.

To do your part, don’t simply dump the old model in the trash—use one of these methods to resell or recycle.

1. DROP IT OFF AT A RETAIL STORE.

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Home and office suppliers often have in-store recycling programs that offer cash back or trade-in options. For instance, Best Buy accepts everything from appliances to car GPS units. (Not all products are accepted, though, so check before you go.) Staples offers trades on phones and tablets and will also take most other electronics, from fax machines to shredders, for recycling. Take your rechargeable batteries and cell phones to Lowes.

2. HOST AN ELECTRONICS DRIVE.

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Work with your employer or a group to put on a tech recycling event. It’s easy enough for people to bring in old TVs, audio equipment, and laptops. Then, you can collect all the items over the course of a few days or weeks and recycle them in bulk with a local organization. A good place to start: the EPA's list of certified electronics recyclers.

3. TRADE IT IN.

Several sites allow you to swap used electronics for cash. These companies refurbish, resell, or recycle old devices. To get started, enter your device’s details to receive a quote, then ship it in using a prepaid label and get money via PayPal, check, or gift card. Amazon’s Trade-In service accepts phones, tablets, speakers, and gaming equipment, provided the items are in good condition; Gazelle takes smartphones, tablets, and Apple computers; and NextWorth buys back tablets, smartphones, and wearables.

4. DOWNLOAD LETGO OR GONE.

Of course, there’s an app for that. Letgo is a free mobile marketplace for a variety of goods, including electronics, and all you have to do is take a picture of your old computer or TV, upload it, and then communicate with potential buyers within the app. Gone deals specifically with used tech, and the app does all the work, including pricing and generating shipping labels, for you—which means you don’t have to limit your sale options to your local area or meet strangers face to face.

5. SELL IT ON CRAIGSLIST, FACEBOOK, OR EBAY.

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Go old-school: List your old electronics on Craigslist, Facebook’s Marketplace, eBay, or your local classifieds. It’s not uncommon to find people who buy and refurbish gadgets for resale or to repurpose parts—or parents looking for a cheap used iPhone or laptop for their child. This way, you can negotiate the sale price and get cash on the spot. While there’s no guarantee that the buyer will dispose of your old phone or tablet responsibly once they’re done with it, selling does give the device a second (or third) life and hopefully will replace the purchase of a new product.

6. DONATE IT.

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While a new phone or gaming console seems like a no-brainer to some, there are many who can’t afford to purchase tech gadgets at all—new or used. If you aren’t able to find a recycling or donation center locally, consider one of these mail-in donation options:

Computers and peripherals: Goodwill has a partnership with Dell called Dell Reconnect. The program takes old computers—and anything you can connect to them, from keyboards to scanners—and refurbishes them for resale. Any parts that can’t be fixed are recycled. The National Cristina Foundation connects consumers to local nonprofits that need computers, and the World Computer Exchange accepts most computer equipment through a local chapter or by mail.

Cell phones: Several organizations collect old cell phones to refurbish, re-sell, and recycle in bulk and then use the funds to support their programming. The National Coalition for Domestic Violence will provide a prepaid shipping label for your phone, laptop, or gaming system, as will Lifecell —the latter purchases Lifestraws for those who lack access to clean water. Cell Phones for Soldiers takes gently used phones to provide communication services to troops and veterans.

Gaming gear: AbleGamers, which provides accessible gaming technology to people with disabilities, accepts donations of used consoles and games via mail. Gamers Outreach and Charity Nerds will take your donated gaming equipment to children who are hospitalized.

7. SEND IT BACK TO THE MANUFACTURER.

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Many companies, including Apple, Dell, HP, and IBM, offer branded recycling programs, which means they’ll take back used devices, recycle them responsibly, and often give you a gift card or a credit towards the purchase of a new device. Take your Apple products to your nearest store or create a prepaid shipping label online. IBM facilitates shipping of its branded products to preferred recyclers in certain states. Because Dell’s recycling program is in partnership with Goodwill, their take-backs aren’t limited to branded devices.

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Live Smarter
The Google Docs Audio Hack You Might Not Know About
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To the uninitiated, Google Docs may take some warming up to. But although it may seem like any other word processor, Docs offers its fair share of nifty features that can make your life a whole lot easier. The only problem is that few people seem to know about them.

The Voice Typing function is one such example. As Quartz discovered, this tool can be used to drastically cut down on the time it takes to transcribe an interview or audio recording—a feature that professionals from many fields could benefit from. Voice Typing might also be useful to those who prefer to dictate what they want to write, as well as those with impairments that prevent them from typing.

Whatever the case may be, it's extremely easy to use. Just open a blank document, click on "tools" at the top, and then select "voice typing." A microphone icon will pop up, allowing you to choose your language. After you've done that, simply click the icon when you're ready to start speaking!

Unfortunately, it's unable to pick up an audio recording played through speakers, so you'll need to grab a pair of headphones, plug them into your phone or voice recorder, and dictate what's said as you listen along. Still, this eliminates the hassle of having to pause and rewind in order to let your fingers catch up to the audio—unless you're the champion of a speed typing contest, in which case you probably don't need this tutorial.

According to Quartz, the transcription is "shockingly" accurate, even getting the spelling of last names right. For a how-to guide on the Voice Typing tool, check out Quartz's video below.

[h/t Quartz]

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