Twitter this week updated its iOS and Android apps with a new feature called “Timestamps,” which the company said will make it easier to share brief moments from longer live videos.
Previously, Twitter users had to direct their followers to specific time codes in a live video so that people knew which moment they were referring to. The Timestamps update is a direct response to that, according to product lead for Periscope Mike Folgner.
Now, when users tap the share sheet extension on a live video, Twitter displays a playback track that they can scrub through to find the exact moment they want their followers to watch. Then they can tap the “new tweet” button, type in any commentary on the video clip, and press “tweet.” The clips can also be sent via direct message or copied and shared through a link.
So, we built Timestamps which lets anyone Tweet a live or replay video starting from the exact moment they want to discuss.
People have always used Twitter to talk about the things they experience. With Timestamps, now we can show rather than just tell everyone what’s happening.
People who see the tweet will be able to watch the specific moment shared within, and if the broadcast is still live they can skip forward in time by tapping “live.” Folgner said the feature is available across all live videos, “whether from a professional content publisher or someone broadcasting from their phone.”
🚀📣 Really excited to launch Timestamps, an easy way to point people to the part within a live video that matters most. pic.twitter.com/ECsyXH9Xzm
Our neurons are firing all the time, receiving signals from other neurons and sending signals of their own. To get a better understanding of how the brain works, scientists often listen in to those signals to see what kind of messages certain neurons… Engadget RSS Feed
Apple today published a paper on its Machine Learning Journal which addressed the topic of differential privacy, and how it can be used to protect user privacy in a time when every business needs to gather increasing amounts of data. This method addressed the fundamental quandary Apple and companies like it face: how to improve user experience, which involves collecting data, without sacrificing privacy. The company proposes the use of local differential privacy, instead of central — in other words, the individual user’s device uses noise to mix up any data before it’s received by a central server. According to the…
Sleeping sickness sounds like something from a fairy tale, except it isn’t, especially when you know how much pain and suffering this disease causes. Also known as human African trypanosomiasis, sleeping sickness is a parasitic disease that comes from the bite of a tsetse fly, which infects the central nervous system. It’s symptoms include fever, headache, joint pains, and itching. It gets worse after weeks or months, when a patient starts manifesting neurological symptoms, such as sleeping problems, confusion, poor coordination, and numbness.
Currently, treatment is effective only when sleeping sickness is detected early — i.e., before the onset of the neurological symptoms. The usual method involves a combination of pills and intravenous infusions. That might soon change, however, as researchers from the Drugs for Neglected Diseases initiative (DNDi), a non-profit based in Geneva, Switzerland, developed a method that relies only on pills. Clinical trial results presented on October 17 at the European Congress on Tropical Medicine and International Health in Antwerp, Belgium, suggest this oral method to be effective, and could potentially eliminate the deadly neurological disease within a decade.
The pill called fexinidazole was able to cure 91 percent of patients suffering from a severe sleeping sickness. Although the usual combo therapy of infusions and pills cured 98 percent, fexinidazole was able to treat 99 percent of the patients who were still in an early stage of the disease. Usually, these would have to undergo a spinal tap before to determine the viability of infusions, but the revolutionary method makes it simpler. If approved, the researchers are convinced that the relative ease with which fexinidazole is given could save more lives than current methods.
Simple and Cost-Effective
Prior to the combined therapy, the only treatment for sleeping sickness was a toxic arsenic-based drug that ended up nearly as fatal as the disease itself, killing one in 20 patients. Sleeping sickness incidence, according to the World Health Organization, has dropped to around 2,200. However, the combined treatment method still doesn’t come easy. It’s tedious, costly, and requires materials difficult to come by, especially in the African areas where sleeping sickness remains prevalent.
“It’s not just the person with sleeping sickness, it’s the family that takes care of them during years of this neurological, very serious disease,” Philippe Büscher, a sleeping-sickness expert at the Institute of Tropical Medicine in Antwerp, Belgium and was not part of the study, told Nature. “Whatever money they have, they’ll spend on this instead of anything else.”
The DNDi continued to search for a better alternative, and in 2007 they stumbled upon fexinidazole, a drug that was previously shelved by Paris-based pharmaceutical company Sanofi. The clinical trials were conducted in the Democratic Republic of the Congo and the Central African Republic, areas with high number of sleeping sickness cases. The researchers estimate that, once approved by the European Medicines Agency, developing the new therapy would only cost around $ 50 million. That might seem a lot, but it’s only a fraction of what pharmaceutical companies usually spend on new drugs.
“This is a success,” Büscher said, “but it is not the end.” Indeed, the DNDi researchers are currently working on an even better option, one that could treat sleeping sickness with just one dose.
In a study published in the journal Nature Chemistry, the researchers showcased a purely chemical technique for gene assembly. It uses an efficient and rapid-acting chemical reaction called click chemistry that puts together multiple modified DNA fragments into a gene — a process called click DNA ligation.
One of the tech’s most impressive applications, however, is the creation of artificial tissues and organs, a process known as 3D bioprinting, and now, a team of researchers from the University of Oxford has developed a new method that takes 3D bioprinting to the next level. They published their work in the journal Nature Communications.
A major challenge faced by researchers when 3D printing artificial tissues is getting them to maintain their shape. The cells are apt to move around in the printed structure and collapse in on themselves.
To avoid this, the Oxford team, led by 3D-bioprinting scientist Alexander Graham from Oxford Synthetic Biology (OxSyBio), contained their cells within nanolitre droplets that were wrapped in a lipid coating. These droplets could then be placed one layer at a time into living structures. Thanks to the structural support provided by the container, the tissues would maintain their shape, and the individual cells could survive longer as well.
Because this new method allows tissues to be built one drop at a time, researchers can use it to more accurately mimic natural tissues.
“We were aiming to fabricate three-dimensional living tissues that could display the basic behaviors and physiology found in natural organisms,” Graham said in a press release.
“To date, there are limited examples of printed tissues, which have the complex cellular architecture of native tissue. Hence, we focused on designing a high-resolution cell printing platform, from relatively inexpensive components, that could be used to reproducibly produce artificial tissues with appropriate complexity from a range of cells including stem cells,” he explained.
“There are many potential applications for bioprinting, and we believe it will be possible to create personalized treatments by using cells sourced from patients to mimic or enhance natural tissue function,” OxSyBio CTO Sam Olof said in the press release. “In the future, 3D bio-printed tissues maybe also be used for diagnostic applications — for example, for drug or toxin screening.”
The next step, according to Graham, is to develop complementary printing techniques that will allow for the use of additional kinds of living and hybrid materials. At the same time, they’re exploring the production of their current artificial tissues on an industrial scale.
Apple on Tuesday was granted a patent for tech which could be used to covertly call the authorities in an emergency situation. The method, if implemented, could mean that emergency services would be just a secret tap away.
The patent, Biometric Initiated Communication, describes a method of sensing certain “manners” in which a finger could touch an iPhone’s screen, known as a “panic command.” The associated gesture would then automatically and discreetly dial 911.
Such a command could be a gesture, a certain cadence of taps, a particular sequence of finger taps (pinky-ring-pinky, for example), or even a specific level of force applied to the screen. When the panic command is activated, it could send a user’s location to first responders and even broadcast live audio or video from the device to the authorities.
According to the patent, while most phones allow emergency call access from a lock screen, this method of contacting emergency responders is “readily apparent to someone watching.” With the panic command method, a user could secretly call 911 when being compelled to unlock their iPhone by an attacker, for example. In that case, the tech would make it seem like the iPhone owner is simply complying with the attacker’s commands.
We already know how useful a device can be in an emergency if the stories of the Apple Watch’s SOS feature are any indication. The biometric method described in the patent could be particularly helpful in a hostage situation. Just consider the woman who used an online Pizza Hut order to secretly alert the police when being held at knifepoint by her boyfriend. Of course, just like with SOS, Apple must figure out a way to contend with or mitigate accidental triggers. Apple has “presumably” worked out similar problems with purchases made through Touch ID, according to CNBC, though the potential for human error is still there.
The patent was published on July 18 by the U.S. Patent and Trademark Office but was first applied for in 2013. Indeed, the patent’s text itself gives away its age, as it mentions headphone jacks — something Apple has away with since the iPhone 7. And, like with all patent applications, there’s no guarantee that the tech will be ever used in a consumer product. But if it does come to fruition, a biometric “panic command” could be a welcome addition to Apple’s life-saving and emergency-oriented features.
Many of us were happy to see the recent addition of a keyboard input method in Assistant and the setting to choose it as a preferred method. After all, many of us don’t like to shout at our phones all the time because we either need some privacy, we’re often in public, or we may simply not feel comfortable talking to an inanimate object.
But what if the keyboard is your preferred input method and there’s that one time where you would rather use voice instead?
Over the years, Android has built up a decent array of accessibility options to help make devices easier to use for its diverse user base. Each new version of the OS attempts to add even more useful features, and Android O is no different. So far we’ve had 3 developer previews of Android 8.0 ahead of its launch later this summer, and at some point along the way Google added a couple of new accessibility features.
In a rather remarkable demonstration, physicists from the University of Science and Technology of China and the Nanjing University of Posts and Telecommunications have developed a way to use quantum memory for quantum secure direct communication (QSDC). They published the results of their experiment in the journal Physical Review Letters.
Whenever one encounters the word quantum, it’s not uncommon to feel a bit unsure of what it means. Since quantum refers to the smallest types of matter — usually particles — the concept shouldn’t be too fundamentally difficult to explain. Quantum physics, in essence, deals with “the physics of the small.” Other theories or applications describe some behavior of particles. Quantum communication, the exchange of information using quantum particles, is one such application.
QSDC is a secure form of quantum communication; what’s commonly known as quantum cryptography.
“Quantum communication provides an absolute security advantage, and it has been widely developed over the past 30 years.” the researchers wrote in the study’s abstract, adding that “[QSDC] promotes high security and instantaneousness in communication through directly transmitting messages over a quantum channel.” Usually, QSDC protocols rely on fiber delay lines to transmit information, which have their limitations. The use of quantum memory, however, may be able to break through those limitations.
Long Distance Quantum Communication
As quantum communication is more secure, physicists have been working on ways to extend its usual reach. This requires quantum memory, which would allow it to effectively control information transfer in the quantum networks of the future. One method for quantum memory relies on using entangled photons. Entanglement is a quantum state that allows for particles to be linked even when separated by huge distances. In the case of quantum memory, the particles would be stored to establish entanglement between separated memories.
Researchers have demonstrated the necessary steps in a QSDC protocol: generating entanglement, having a secure channel, and the ability to distribute, store, and encode the entangled photons. To bypass the usual difficulty in decoding entangled photons, the researchers opted for an alternative method that was easier to implement.
While they were able to demonstrate QSDC effectively using quantum memory, the researchers hope to extend its distance further: perhaps up to 100 km (62 miles) if not more. Quantum teleportation and entanglement have already been shown to be capable of bridging such distances. This would be an important step to realize the future of long-distance, satellite-based and global-scale QSDC for a more secure transfer of information around the world.