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NEW YORK — In the bustling world of supermarkets, a simple but groundbreaking innovation emerged from the mind of IBM engineer Paul McEnroe: the barcode. In 1969, McEnroe envisioned a future where lasers would scan products, significantly speeding up checkout processes. His ideas laid the groundwork for what would become the Universal Product Code (UPC).

The concept of barcodes had been in development for decades, following a patent filed on October 20, 1949, by a team that included one of McEnroe’s colleagues. At the time, barcodes had never been used commercially, but McEnroe and his team were determined to bring the technology to life. They envisioned a system where shoppers would glide through checkouts with lasers scanning items at lightning speed.

However, IBM’s legal team had concerns about the use of lasers. They feared potential lawsuits from customers who might intentionally injure their eyes with the devices. “No way,” they insisted, despite McEnroe’s assurances that the half-milliwatt laser posed minimal risk compared to the energy emitted by a standard light bulb.

To ease the lawyers’ fears, McEnroe turned to Rhesus monkeys imported from Africa. After conducting tests at a nearby laboratory that confirmed the lasers were safe for the animals, the legal team relented. “It was crazy,” McEnroe recalled, chuckling at the unexpected turn of events that included finding a zoo in North Carolina to take in the monkeys.

The journey to a functional barcode system was a collaborative effort. McEnroe’s team included Joe Woodland, who had originally conceptualized barcodes decades earlier. Woodland’s early idea, inspired by drawing lines in the sand, evolved with the help of engineer George Laurer, who refined it into the UPC, a rectangular design with black vertical lines corresponding to a unique number.

The grocery industry officially adopted the UPC in 1973, and the first product, a pack of Wrigley’s gum, was scanned at a Marsh Supermarket in Ohio in 1974. This marked the beginning of a global revolution in retail.

The UPC’s success paved the way for various other barcode formats, including 2D barcodes like QR codes, which can encode more complex information. Interestingly, McEnroe’s work with scanning technology dates back to his early career, where he scanned large maps for the CIA, setting the stage for his future endeavors in retail technology.

McEnroe’s vision was simple yet ambitious: to streamline the checkout process by allowing supermarket staff to scan products into a computer rather than manually processing each sale. The IBM team had to ensure their code-scanning system would function consistently, even at high speeds of up to 100 inches per second.

By focusing on the spacing between vertical lines rather than their thickness, the IBM team created a more reliable scanning process. This innovation meant that even if a label printer produced uneven lines, the scanner would still accurately read the code.

Today, barcodes are ubiquitous, with millions of products bearing these small black-and-white markings, revolutionizing how retail operates around the world. What began as a simple idea from McEnroe and his team at IBM has transformed into a vital component of modern commerce.

Technology

ZX Spectrum: The 1980s Icon That Revolutionized Home Computing

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The ZX Spectrum, a groundbreaking 8-bit home computer, holds a special place in the history of technology as a catalyst for the UK’s home computing boom in the 1980s. Released in April 1982, the computer—with its rubber keys and distinctive rainbow design—ushered in an era of programming and gaming accessibility for millions.

The Spectrum, often affectionately called “The Speccy,” was the brainchild of Sir Clive Sinclair and his team. Priced at £125 for the 16k model and £175 for the 48k version, it became a staple under Christmas trees across the UK. Its colourful graphics, in contrast to the monochrome display of its predecessor, the ZX81, brought games like Manic Miner and Jet Set Willy to life on TV screens.

A new documentary, The Rubber-Keyed Wonder, explores the ZX Spectrum’s profound influence. Co-director Anthony Caulfield noted that the device arrived at a time when the idea of home computing was revolutionary. “Computers were in mainframes, requiring air conditioning and millions of dollars. The concept of a computer in your home was completely new,” he explained.

Manufactured in Dundee

The Spectrum was manufactured at the Timex factory in Dundee, Scotland, a city that would later become a hub for gaming innovation. Sinclair selected the facility for its skilled workforce, transitioning from watchmaking to technology. At its peak, the factory produced one ZX Spectrum every four seconds.

This local production spurred creativity among residents. “People got access to Spectrums through stores and even via the ‘back door’ of the factory,” said Mark Ettle, now head of Dundee-based Cobra Mobile. “It kick-started the imagination of what the world could be.”

Ettle recalls the Spectrum’s ability to make arcade-style gaming accessible at home while encouraging programming exploration. Games such as Ant Attack, Skool Daze, and Sabre Wulf became cultural phenomena. Ettle, an early expert at Sabre Wulf, said, “I was one of the first in the UK to complete the game and received a free game as a reward.”

Legacy of Innovation

The Spectrum’s impact extended beyond gaming. Mike Dailly, co-founder of Dundee’s DMA Design—the studio behind Lemmings and Grand Theft Auto—said his journey began with a ZX Spectrum. “My mum’s work needed a database, so they got me a Spectrum,” he said. “I spent more time tinkering and writing programs than playing games.”

Dailly emphasized the device’s role in establishing Dundee as a global gaming centre. “The entire original DMA Design team started on Spectrums,” he shared.

Today, the ZX Spectrum is remembered not only as a gaming console but as a cultural icon that inspired a generation of developers, reshaping the world of computing and entertainment.

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IVF Success Rates: Can New Research Improve the Odds?

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While in vitro fertilization (IVF) has been a revolutionary infertility treatment since the birth of Louise Brown, the first baby conceived through the procedure in 1978, many couples still face a long and uncertain journey toward parenthood. Despite advancements in IVF techniques, the live birth rate per embryo transfer remains low for many patients. New research may hold the key to improving these odds.

IVF begins with a delicate process where eggs are fertilized outside the body and observed as they develop into embryos. Some fertility clinics offer a high-tech procedure known as time-lapse imaging, where embryos are photographed every ten minutes to monitor their progress. This technique, often presented as a way to increase the chances of a successful pregnancy, has become widely used and expensive—adding up to $700 in the UK or $500 in the US to an IVF cycle.

However, a study published in The Lancet in July 2024 cast doubt on the benefits of time-lapse imaging. The study, which reviewed over 1,500 IVF procedures, found no significant difference in live birth rates between those using time-lapse imaging and those who did not. Priya Bhide, a senior lecturer at Queen Mary University of London, who co-authored the study, noted that previous reviews had already suggested limited evidence for the technique’s effectiveness.

Despite the lack of clear improvements from time-lapse imaging, the broader field of IVF has made incremental progress over the years. For example, the success rate of IVF has tripled for women under 38 since the 1990s, and the live birth rate in the US has risen 1.6 times over the past decade. Still, for women aged 35 and older, the success rate per embryo transfer remains relatively low, around 30-39%.

The emotional and financial toll of IVF can be severe, with many patients undergoing multiple cycles, each costing thousands of dollars, and facing repeated failures. However, researchers are hopeful that new approaches could increase the chances of success.

One promising area of research is the development of better techniques for egg extraction. A new method being tested on dairy cows uses a specially designed needle that induces fluid turbulence inside the follicle to extract more eggs without damaging them. If successful in human trials, this technique could increase both the quantity and quality of retrieved eggs, potentially improving IVF outcomes.

Additionally, scientists in Spain are experimenting with magnetic nanoparticles that allow for the manipulation of eggs and embryos without direct physical contact. This method could reduce the risk of damaging delicate cells, which is a common concern in IVF procedures.

In Australia, researchers are investigating the use of light to measure lipid levels in embryos, which could offer new insights into their metabolic activity and potential for successful development. However, as with all new technologies, these methods still need extensive testing before they can be applied in clinical practice.

While IVF continues to offer hope for millions, researchers caution that even with new innovations, the road to a successful pregnancy remains uncertain. As IVF becomes more advanced, the challenge remains to make these techniques more effective and accessible, while managing the emotional and financial strain for couples.

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UK Considers Social Media Ban for Under-16s Amid Safety Concerns

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The UK government is exploring a potential ban on social media for under-16s, according to Technology Secretary Peter Kyle. Speaking on BBC Radio 4’s Today programme, Kyle emphasized that safeguarding children online is a top priority, stating he would “do what it takes” to ensure their safety.

Kyle also announced plans for further research into the effects of technology, including social media and smartphones, on young people. He noted the lack of “firm, peer-reviewed evidence” on the matter and said such data would inform future decisions.

Online Safety Act Enforcement

The announcement coincides with Kyle’s “letter of strategic intent” to Ofcom, the UK’s communications regulator, which will soon gain new enforcement powers under the Online Safety Act (OSA). The OSA, set to take effect in 2024, requires tech companies to take greater responsibility for the content on their platforms, particularly to shield children from harmful material.

Kyle stressed the importance of assertive regulation, calling on Ofcom to fully utilize its authority under the Act. “I just want to make sure that Ofcom knows that government expects them to be used,” he said.

Under the OSA, social media and messaging platforms face steep fines—potentially in the billions—if they fail to comply. Some platforms have already introduced changes, such as Instagram’s new teen accounts and Roblox’s ban on young children messaging others.

Calls for Broader Action

The Molly Rose Foundation, a campaign group advocating for online safety, welcomed Kyle’s efforts but urged the government to strengthen the OSA. “The public and parents back an updated Act that embeds an overarching duty of care on tech firms,” the group posted on social media platform X, calling for swift action from the Prime Minister.

Legal experts have cautioned that banning social media for young people is only part of the solution. Iona Silverman, a lawyer at Freeths, described the measure as “a drop in an ocean-sized problem,” pointing out that teenagers may still find ways to access harmful content. She called for a broader cultural shift and more proactive legislation to address the issue.

Lessons from Australia

The UK’s deliberations come after Australia announced plans to ban social media for children under 16. When asked if the UK would adopt a similar policy, Kyle said, “Everything is on the table,” but stressed the need for evidence-based decisions.

Smartphone Use Under Scrutiny

The debate extends beyond social media to smartphone usage among young people. Parliament is reviewing a private member’s bill addressing digital safety for children, with input from the Healthcare Professionals for Safer Screens group. Founder and GP Rebecca Foljambe highlighted growing concerns among health professionals about smartphone overuse.

While the government has stopped short of banning smartphones in schools, it has issued guidelines to promote effective restrictions. Kyle previously stated that the “battle over phone use in schools had been won.”

Critics, however, continue to call for more decisive action to protect children in an increasingly digital world.

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