Toggle light / dark theme

Despite the NSA confirming the existence of Skynet, we all should be grateful that technology has not yet advanced to the stage where a liquid metal T-1000 terminator can shape-shift its way into your home and demand to see John Connor.

But scientists in China are making a solid effort make a less sinister version of this scenario at reality, by creating liquid metal droplets that could one day make “self-powered liquid metal machines” a real possibility.

Because of their excellent conductivity, low toxicity, and shape-shifting abilities, liquid metal alloys have been put to good use in targeting cancer cells, creating nature-inspired self-fuelled motors for robots, and many other liquid metal biomaterials.

Read more

Malicious software that blocks access to computers is spreading swiftly across the world, snarling critical systems in hospitals, telecommunications and corporate offices, apparently with the help of a software vulnerability originally discovered by the National Security Agency.

The reports of the malware spread began in Britain, where the National Health Service (NHS) reported serious problems throughout Friday. But government officials and cybersecurity experts later described a far more extensive problem growing across the Internet and unbounded by national borders. Europe and Latin America were especially hard hit.

“This is not targeted at the NHS,” British Prime Minister Theresa May told reporters. “It’s an international attack, and a number of countries and organizations have been affected.”

Read more

The US government has rolled out a plan to reshape airport security around facial recognition, playing off a wealth of passport photos and visa applications.

Led by Customs and Border Protection, the plan is built around the Biometric Exit program, which will register visitors leaving the US using facial recognition. But new statements show that CBP’s plans could make facial scans necessary for US citizens as well, documenting them when they reenter the country or pass through TSA checkpoints. The result would eventually grow into an airport-wide system Customs officials call “The Biometric Pathway.”

John Wagner, deputy assistant commissioner at CBP, laid out that vision at the ConnectID conference last week. “We’re going to build this for [Biometric] Exit. We’re out of time, we have to,” Wagner told the crowd. “But why not make this available to everyone? Why not look to drive the innovation across the entire airport experience?”

Read more

The year is 2030. Former president Donald Trump’s border wall, once considered a political inevitability, was never built. Instead, its billions of dollars of funding were poured into something the world had never seen: a strip of shared territory spanning the border between the United States and Mexico. Otra Nation, as the state is called, is a high-tech ecotopia, powered by vast solar farms and connected with a hyperloop transportation system. Biometric checks identify citizens and visitors, and relaxed trade rules have turned Otra Nation into a booming economic hub. Environmental conservation policies have maximized potable water and ameliorated a new Dust Bowl to the north. This is the future envisioned by the Made Collective, a group of architects, urban planners, and others who are proposing what they call a “shared co-nation” as a new kind of state.

Many people have imagined their own alternatives to Trump’s planned border wall, from the plausible — like a bi-national irrigation initiative — to the absurd — like an “inflatoborder” made of plastic bubbles. Made’s members insist that they’re serious about Otra Nation, though, and that they’ve got the skills to make it work. That’s almost certainly not true — but it’s also beside the point. At a time when policy proposals should be taken “seriously but not literally,” and facts are up for grabs, Otra Nation turns the slippery Trump playbook around to offer a counter-fantasy. In the words of collective member Marina Muñoz, “We can really make the complete American continent great again.”

Read more

Biometrics – technology that can recognise individuals based on physical and behavioural traits such as their faces, voices or fingerprints – are becoming increasingly important to combat financial fraud and security threats. This is because traditional approaches, such as those based on PIN numbers or passwords, are proving too easily compromised. For example, Barclays has introduced TouchID, whereby customers can log onto internet banking using fingerprint scanners on mobile phones.

However, this is not foolproof either – it is possible to forge such biometrics. Fingers can after all be chopped off and placed by impostors to gain fraudulent access. It has also been shown that prints lifted from glass using cellophane tape can be used with gelatine to create fake prints. So there is a real need to come up with more advanced biometrics that are difficult or impossible to forge. And a promising alternative is the brain.

Emerging biometric technology based on the electrical activity of the brain have indeed shown potential to be fraud resistant. Over the years, a number of research studies have found that “brainprints” (readings of how the brain reacts to certain words or tasks) are unique to individuals as each person’s brain is wired to think differently. In fact, the brain can be used to identify someone from a pool of 102 users with more than 98% accuracy at the moment, which is very close to that of fingerprints (99.8% accuracy).

Read more

Many forms of energy surround you: sunlight, the heat in your room and even your own movements. All that energy—normally wasted—can potentially help power your portable and wearable gadgets, from biometric sensors to smart watches. Now, researchers from the University of Oulu in Finland have found that a mineral with the perovskite crystal structure has the right properties to extract energy from multiple sources at the same time.

Perovskites are a family of minerals, many of which have shown promise for harvesting one or two types of at a time—but not simultaneously. One family member may be good for solar cells, with the right properties for efficiently converting solar energy into electricity. Meanwhile, another is adept at harnessing energy from changes in temperature and pressure, which can arise from motion, making them so-called pyroelectric and piezoelectric materials, respectively.

Sometimes, however, just one type of energy isn’t enough. A given form of energy isn’t always available—maybe it’s cloudy or you’re in a meeting and can’t get up to move around. Other researchers have developed devices that can harness multiple forms of energy, but they require multiple materials, adding bulk to what’s supposed to be a small and portable device.

Read more

There is nothing new about the elusiveness of love.

For millennia, people have written stories, sonnets and songs about the fundamental struggle of finding the perfect mate. Today, technology companies are writing code to help you do just that.

In the Bay Area, innovators like to envision a future in which technology will streamline, simplify and democratize love in its many phases — from dating to sex to marriage and, yes, even heartbreak.

Read more

CARSON CITY — State Sen. Becky Harris said a bill to prohibit forced microchipping of people is not as far-fetched as it might seem, because it happens in some places around the world.

Senate Bill 109 would make it a Class C felony to require someone to be implanted with a radio frequency identifier, such as microchips placed in pets.

The idea for the bill came from a constituent, the Las Vegas Republican said.

Read more

At the heart of Bitcoin or any Blockchain ledger is a distributed consensus mechanism. It’s a lot like voting. A large and diverse deliberative community validates each, individual user transaction, ownership stake or vote.

But a distributed consensus mechanism is only effective and faithful if the community is impartial. To be impartial, voters must be fairly separated. That is, there must be no collusion enabled by concentration or hidden collaboration. They must be separated from the buyer and seller; they must be separated from the big stakeholders; and they must be separated from each other. Without believable and measurable separation, all sorts of problems ensue. One problem that has made news in the Bitcoin word is the geographical concentration of miners and mining pools.

A distributed or decentralized transaction validation is typically achieved based on Proof-of-Work (POW) or Proof-of-Stake (POS). [explain]. But in practice, these methodologies exhibit subtle problems…

The problem is that Proof-of-Work can waste an enormous amount of energy and both techniques result in a concentration of power (either by geography or by special interest) — rather than a fair, distributed consensus.

In a quasi-formal paper, C.V. Alkan describes a fresh approach to Blockchain consensus. that he calls Distributed Objective Consensus. As you try to absorb his mechanism, you encounter concepts of Sybil attacks, minting inequality, the “nothing-at-stake” problem, punishment schemes and heartbeat transactions. Could Alkan’s distributed consensus mechanism be too complex for the public to understand or use?…

While I have a concern that time stamps and parent-child schemes may degrade user anonymity, the complexity doesn’t concern me. Alkan’s paper is a technical proposal for magic under the covers. Properly implemented, a buyer and seller (and even a miner) needn’t fully understand the science. The user interface to their wallet or financial statement would certainly be shielded from the underlying mechanics.

Put another way: You would not expect a user to understand the mechanism any more than an airline passenger understands the combustion process inside a jet engine. They only want to know:

• Does it work? • Is it safe? • Is it cost effective? • Will I get there on time?

So will Alkan’s Decentralized Objective Consensus solve the resource and concentration problems that creep into POW and POS? Perhaps. At first glance, his technical presentation appears promising. I will return to explore the impact on privacy and anonymity, which is my personal hot button. It is a critical component for long term success of any coin transaction system built on distributed consensus. That is, forensic access and analysis of a wallet or transaction audit trail must be impossible without the consent and participation of at least one party to a transaction.


Philip Raymond co-chairs CRYPSA and The Bitcoin Event. He is a Lifeboat board member, editor
at AWildDuck and will deliver the keynote address at Digital Currency Summit in Johannesburg.