WhatsApp is changing the way billions of users log into the messaging app, ditching passwords and two-factor authentication in favour of quicker and more secure passkeys. The move is part of a major shift within the tech industry to move away from decades-old password technology and replace it with the more modern passkey format, which combines biometric information like fingerprints with a simple numeric code in order to identify people. A similar switch was recently announced by Google, which will introduce passkeys to its apps like Maps, Search and YouTube. WhatsApp’s update will only impact Android users to begin with. “Passkeys are a new way to log back into your account,” said Will Cathcart, who heads WhatsApp. “This is a more secure way of confirming it’s really you – and gives you an added layer of security.” WhatsApp is also rolling out self-destructing voice notes to users as part of new measures to improve privacy on the world’s most popular messaging app. The update is currently only available for beta tester users who have the latest version of WhatsApp installed on their phone or computer, though it is expected to eventually be introduced for all users. With more than 2.7 billion users worldwide – the majority of which on Android devices – WhatsApp updates typically need to be introduced gradually in order to make sure any potential security bugs do not have a critical impact. The self-destructing audio messages, first spotted by WhatsApp feature tracker Wabetainfo, is compatible with both Android and iOS users, though no date has been given for when a wider roller out might be expected. WhatsApp does not comment on release schedules for feature updates unless they relate to security. “After sending the voice note with view once mode enabled, you won’t be able to listen to it and the recipient can no longer listen to the voice note after dismissing it,” Wabetainfo noted. “This mode effectively minimises the chances of unauthorised access or later listening, providing a new layer of privacy for sensitive and confidential information.” The latest update follows recently added features like ‘Channels’, which allow people to follow celebrities and companies within the app, and a ‘Create’ button that gives users the ability to make custom art on the platform. The Create feature brings generative artificial intelligence to WhatsApp for the first time, and means users do not require external tools or specific design skills to create the stickers. Instead, the custom stickers can be produced using simple text-based prompts, similar to other AI image generators like Midjourney and OpenAI’s Dall-E. Read More Facebook and Instagram users face monthly fee for ad-free version Meta launches AI chatbots with ‘personalities’ to take on ChatGPT Viral WhatsApp warning of cyberattack targeting Jewish people is fake Amazon trials humanoid robots to see if they can help staff warehouses Tesla’s profits dip as Musk goes on rant about staff working from home

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A group of scientists and philosophers claim to have identified a “missing law of nature”, in a discovery which has huge implications for our understanding of how, basically, everything works. Most of us are familiar with the names – if not the intricacies – of many of the physical laws which govern the world and beyond, such as gravity and thermodynamics. And yet, no established physical law has been able to describe the behaviours of countless complex systems that exist across the universe – until now. In a paper published in the PNAS journal on 16 October, a multidisciplinary team from some of the US’s top institutes and universities, unveiled a new law claiming to do just that. In a nutshell, their law states that evolution is not limited to life on Earth, it also occurs in other massively complex systems – from planets to atoms. This means that these systems naturally “evolve” to states of greater diversity, and complexity. In other words, the researchers found evolution to be a common feature of the natural world's complex systems which, according to the Carnegie Institution for Science, comprise the following characteristics: “They are formed from many different components, such as atoms, molecules, or cells, that can be arranged and rearranged repeatedly “Are subject to natural processes that cause countless different configurations to be formed.” Only a small fraction of these configurations survive via a process of natural selection called “selection for function”. According to the researchers, regardless of whether the system is living or nonliving, when a new configuration works and function improves, evolution occurs. The authors' new law – which they have christened "the Law of Increasing Functional Information" – states that the system will evolve "if many different configurations of the system undergo selection for one or more functions." "An important component of this proposed natural law is the idea of 'selection for function,'" the study’s lead author, astrobiologist Dr Michael L. Wong, explained. The team’s research builds on Charles Darwin’s theory of natural selection, which suggests the function exists to ensure the “survival of the fittest”. For their work, Dr Wong and his team expanded on this perspective, pointing to the existence of three types of this selection for function in nature. The first, most basic type, they claim, is stability – the stable arrangements of atoms or molecules which are selected to continue. Second, are dynamic systems which are selected for their ongoing supplies of energy. And the third, and most intriguing, function is "novelty" – the tendency of evolving systems to explore new configurations which can lead to surprising new behaviours or characteristics. Novelties are, ironically, nothing new. Indeed, life’s evolutionary history is rich with examples: photosynthesis evolved when single cells learned to harness light energy; multicellular life evolved when cells learned to cooperate; and species evolved thanks to advantageous new behaviours such as walking and thinking. The same type of evolution happens in the mineral kingdom, as the Carnegie Institution for Science notes in a release published by Phys.org. Indeed, Earth's minerals, which began with about 20 at the dawn of our solar system, now number almost 6,000 known today. This is thanks to the ever more complex physical, chemical, and biological processes which have occurred over the past 4.5 billion years. The paper also notes that just two major elements – hydrogen and helium – formed the first stars shortly after the big bang. Those earliest stars then used this hydrogen and helium to create around 20 heavier chemical elements, which was built upon by the next generation of stars. "Charles Darwin eloquently articulated the way plants and animals evolve by natural selection, with many variations and traits of individuals and many different configurations," co-author and research lead Robert M. Hazen explained. "We contend that Darwinian theory is just a very special, very important case within a far larger natural phenomenon. “The notion that selection for function drives evolution applies equally to stars, atoms, minerals, and many other conceptually equivalent situations where many configurations are subjected to selective pressure." The new law has a number of exciting implications, including a deeper understanding of how the Universe itself came to exist. It could also help explain how life differs from other complex evolving systems, and could help aid the search for life elsewhere. Furthermore, at a time when increasingly autonomous AI systems are of increasing concern, it’s very handy to have a law that characterises how both natural and symbolic systems evolve. It also offers insights into how we could artificially influence the rate of evolution of some systems which, again, could prove invaluable. The key point to remember, as Dr Wong put it, is that whilst life is the “most striking example of evolution”, it’s not the only one. Evolution, it transpires, is everywhere. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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