Author: The Conversation

The demand for cheaper, greener electricity means that the energy landscape is changing faster than at any other point in history. This is particularly true of solar-powered electricity and battery storage. The cost of both has dropped at unprecedented rates over the past decade and energy efficient technologies such as LED lighting have also expanded. Access to cheap and ubiquitous solar power and storage will transform the way we produce and use power, allowing electrification of the transport sector. There is potential for new chemical-based economies in which we store renewable energy as fuels, and support new devices making up an “internet of things”. But our…

Skin is our largest organ, made up of complex sensors constantly monitoring for anything that might cause us pain. Our new technology replicates that – electronically. The electronic artificial skin we’ve developed reacts to pain stimuli just like real skin, and paves the way for better prosthetics, smarter robotics and non-invasive alternatives to skin grafts. Our prototype device mimics the body’s near-instant feedback response and can react to painful sensations with the same lighting speed at which nerve signals travel to the brain. Our new technology, details of which are published in Advanced Intelligent Systems, is made of silicone rubber with…

The Trump administration’s recently announced bans on Chinese-owned social media platforms TikTok and WeChat could have unintended consequences. The orders bar the apps from doing business in the U.S. or with U.S. persons or businesses after Sept. 20 and require divestiture of TikTok by Nov. 12. The executive orders are based on national security grounds, though the threats cited are to citizens rather than the government. Foreign policy analysts see the move as part of the administration’s ongoing wrestling match with the Chinese government for leverage in the global economy. Whatever the motivation, as someone who researches both cybersecurity and technology policy, I am not convinced that the benefits outweigh the costs. The bans threaten Americans’…

“Hello,” says trumpeter Sydney Mavundla. “Greetings to you, sitting in your living room there on that red couch!” But Mavundla can’t see his audience. He’s talking through the “fourth wall” – the screen of a digital device – as he live streams a concert by his group from an empty studio out to the online world. As COVID-19 lockdown clamped down in early 2020, musicians everywhere began turning to live streaming as a potential alternative source of connection with audiences and earnings. But how realistic were those hopes? For South Africa, that’s what Digital Futures? – a just-published snapshot study of live streaming platforms –…

Detroit police wrongfully arrested Robert Julian-Borchak Williams in January 2020 for a shoplifting incident that had taken place two years earlier. Even though Williams had nothing to do with the incident, facial recognition technology used by Michigan State Police “matched” his face with a grainy image obtained from an in-store surveillance video showing another African American man taking US$3,800 worth of watches. Two weeks later, the case was dismissed at the prosecution’s request. However, relying on the faulty match, police had already handcuffed and arrested Williams in front of his family, forced him to provide a mug shot, fingerprints and a…

TikTok, a social media platform targeted at young mobile phone users, was the second-most downloaded app in the world in 2019. It was the most downloaded app in July 2020. It’s also become a geopolitical football. Owned by Chinese company ByteDance, TikTok has been banned by India along with 58 other Chinese-owned apps in July in response to escalating border tensions between the two countries. The Trump administration issued an executive order banning TikTok and Chinese-owned messaging platform WeChat from engaging in transactions in the United States beginning on Sept. 15. The company sued the Trump administration in August in response to the ban. As a political scientist who studies social media,…

The “infodemic” of misinformation about coronavirus has made it difficult to distinguish accurate information from false and misleading advice. The major technology companies have responded to this challenge by taking the unprecedented move of working together to combat misinformation about COVID-19. Part of this initiative involves promoting content from government healthcare agencies and other authoritative sources, and introducing measures to identify and remove content that could cause harm. For example, Twitter has broadened its definition of harm to address content that contradicts guidance from authoritative sources of public health information. Facebook has hired extra fact-checking services to remove misinformation that could lead to imminent physical harm.…

Throughout our lifetimes we consume, collate, curate, host and produce a staggering quantity of data – some by our own hand, some by others on our behalf, and some without our knowledge or consent. Collectively, our “digital footprints” represent who we are and who we were. Our digital legacies are immortal and can impact those we leave behind. Many of us take steps to secure our privacy while we’re alive, but there’s mounting evidence that we should be equally concerned about the privacy and security risks of our “data after death”. Reincarnation as data It might be tempting to think of…

In day-to-day life, you probably haven’t had someone yell at you, “Get back in the kitchen and make me a sandwich!” If you’re a woman who plays online video games, though, statements like this, and worse, are all too common. As COVID-19 has driven much of life online and fueled a boom in online gaming, harassment in these and other internet spaces has increased. Forty-one percent of computer and videogame players are female, down from 46% in 2019. Despite its digital nature, online harassment can have real-world consequences for victims, including emotional and physical distress. This has left online gaming companies and players scrambling for…

There has been a clash of clans in mobile gaming, with angry birds Apple, Google and Epic Games in a saga over in-app payments. Video game developer Epic’s massively popular “battle royale” game Fortnite was removed from Apple’s App Store and the Google Play Store last week. Android players can still download the game directly via the Epic Games mobile app, but for Apple iOS users the decision means no new downloads. Currently installed versions of the game will still work, but iOS players will be unable to update the game and participate in the next season of Fortnite, beginning on August…