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AI wearable helps stroke survivors speak again

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AI wearable helps stroke survivors speak again

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Losing the ability to speak clearly after a stroke can feel devastating. For many survivors, the words are still there in their minds, but their bodies will not cooperate. Speech becomes slow, unclear or fragmented. This condition, known as dysarthria, affects nearly half of all stroke survivors and can make everyday communication exhausting. Now, researchers believe they may have found a better way forward. Scientists at the University of Cambridge have developed a wearable device called Revoice. It is designed to help people with post-stroke speech impairment communicate naturally again without surgery or brain implants.

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FULLY IMPLANTABLE BRAIN CHIP AIMS TO RESTORE REAL SPEECH

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A soft, flexible choker like this houses Revoice’s sensors, which read subtle throat vibrations to help reconstruct speech in real time. (University of Cambridge)

Why dysarthria makes recovery so hard

Dysarthria is a physical speech disorder. A stroke can weaken the muscles in the face, mouth and vocal cords. As a result, speech may sound slurred, slow or incomplete. Many people can only say a few words at a time, even though they know exactly what they want to say. According to professor Luigi Occhipinti, that disconnect creates deep frustration. Stroke survivors often work with speech therapists using repetitive drills. These exercises help over time, but open-ended conversation remains difficult. Recovery can take months or even longer, which leaves patients struggling during daily interactions with family, caregivers and doctors.

How the Revoice device works

Revoice takes a very different approach. Instead of asking users to type, track their eyes or rely on implants, the device reads subtle physical signals from the throat and neck. It looks like a soft, flexible choker made from breathable, washable fabric. Inside are ultra-sensitive textile strain sensors and a small wireless circuit board. When a user silently mouths words, the sensors detect tiny vibrations in the throat muscles. At the same time, the device measures pulse signals in the neck to estimate emotional state.

Those signals are processed by two artificial intelligence (AI) agents:

  • One reconstructs words from mouthed speech
  • The other interprets emotion and context to build complete sentences

Together, they allow Revoice to turn a few mouthed words into fluent speech in real time.

ELON MUSK SHARES PLAN TO MASS-PRODUCE BRAIN IMPLANTS FOR PARALYSIS, NEUROLOGICAL DISEASE

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This diagram shows how Revoice combines throat muscle signals and pulse data with AI to turn silently mouthed words into full, expressive sentences in real time. (University of Cambridge)

Why this AI approach is different

Earlier silent speech systems had serious limits. Many were tested only on healthy volunteers. Others forced users to pause for several seconds between words, which made the conversation feel unnatural. Revoice avoids those delays. It uses an AI-driven throat sensor system paired with a lightweight language model. Because the model runs efficiently, it uses very little power and delivers near-instant responses. The device is powered by a 1,800 mWh battery, which researchers expect will last a full day on a single charge.

What early trials revealed

After refining the system with healthy participants, researchers tested Revoice with five stroke patients who had dysarthria.

The results were striking:

  • Word error rate: 4.2%
  • Sentence error rate: 2.9%

In one example, a patient mouthed the phrase “We go hospital.” Revoice expanded it into a complete sentence that reflected urgency and frustration, based on emotional signals and context. Participants reported a 55% increase in satisfaction and said the device helped them communicate as fluently as they did before their stroke.

PARALYZED MAN WALKS AGAIN AFTER EXPERIMENTAL DRUG TRIAL TRIGGERS REMARKABLE RECOVERY

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This figure breaks down the Revoice hardware and AI pipeline, showing how strain sensors, wireless electronics, and emotion decoding work together to reconstruct natural speech. (University of Cambridge)

Beyond stroke recovery

Researchers believe Revoice could also help people with Parkinson’s disease and motor neuron disease. Because the device is comfortable, washable, and designed for daily wear, it could fit into real-world routines rather than being confined to clinics. Before that can happen, larger clinical trials are required. The research team plans to begin broader studies with native English-speaking patients and hopes to expand the system to support multiple languages and a wider range of emotional expressions. The findings were published in the journal Nature Communications.

What this means for you

If you or someone you care for has experienced a stroke, this research points to a major shift in recovery tools. Revoice suggests that speech assistance does not need to be invasive to be effective. A wearable solution could support communication during the most difficult months of rehabilitation, when confidence and independence often suffer the most. It may also reduce stress for caregivers who struggle to understand incomplete or unclear speech. Clear communication can improve medical care, emotional well-being and daily decision-making.

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Kurt’s key takeaways

Communication is tied closely to dignity and independence. For stroke survivors, losing that ability can be one of the hardest parts of recovery. Revoice shows how artificial intelligence and wearable tech can work together to restore something deeply human. While it is still early, this device represents a meaningful step toward making recovery feel less isolating and more hopeful.

If a simple wearable could help restore natural speech, should it become a standard part of stroke rehabilitation? Let us know by writing to us at Cyberguy.com

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Technology

Dyson’s powerful 360 Vis Nav robovac is down to $279.99 for a limited time

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Dyson’s powerful 360 Vis Nav robovac is down to 9.99 for a limited time

If you’re tired of running your vacuum multiple times just to get the dirt and debris out of the carpets in your living room, Dyson’s 360 Vis Nav is worth a look. It’s one of the more powerful robot vacuums currently available, and now through May 11th (or while supplies last), it’s on sale at Woot for an all-time low of $279.99 ($919 off) with a full two-year warranty.

The last-gen 360 Vis Nav offers a whopping 65 air watts of suction, allowing it to pull dirt, dust, and pet hair from carpets impressively well. In her brief time testing the robovac, my colleague Jennifer Pattison Tuohy said the Dyson “demolished a pile of dry oatmeal in seconds,” adding that she briefly worried it might even suck up the tassels on her large rug (it didn’t). By comparison, many robot vacuums — including Dyson’s new $1,200 Spot + Scrub AI — require multiple passes to fully eradicate the same kind of mess on your floor.

What’s more, the robovac’s small, D-shaped design and the location of its ultra-fluffy brush allow it to dig into edges and corners more effectively than many of the more roundish robot vacuums, while its lower profile lets it easily get under most beds and sofas. The roomy 500ml dustbin also means you likely won’t need to empty it too often, while Dyson’s built-in handle and terrific quick-release button make removing said bin a relatively simple task when it’s time to do so.

While it is undeniably powerful, it’s worth noting that the 360 Vis Nav lacks a few features found on some of its more modern rivals. Although its navigation worked well enough during our testing, it lacks AI-powered obstacle avoidance and doesn’t come with a self-emptying dock. Battery life is also relatively short at around 65 minutes per charge. Nonetheless, if your top priority is quickly removing dust, dirt, and pet hair from carpets without multiple passes, the Dyson remains an option worth considering, especially at this discounted price.

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Global scam crackdown leads to 276 arrests

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Global scam crackdown leads to 276 arrests

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We’ve often warned you about romance scams and crypto “investment” opportunities that feel too good to pass up. Now, there’s a major update that shows just how organized these operations have become.

The Department of Justice and Federal Bureau of Investigation announced a sweeping international operation that led to at least 276 arrests and the shutdown of multiple scam centers tied to cryptocurrency fraud. These networks targeted Americans and drained millions of dollars from victims.

The operation spanned continents and involved coordinated efforts by law enforcement and tech companies.

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TOP 5 SCAMS SPREADING RIGHT NOW

The Department of Justice and FBI say international scam networks used romance and fake crypto investment schemes to steal millions from victims. (Helena Dolderer/Picture Alliance)

How the cryptocurrency scam crackdown unfolded

Authorities worked with partners around the world, including the Dubai Police and law enforcement agencies in Thailand and beyond. Together, they dismantled at least nine scam centers linked to large-scale crypto fraud.

Several suspects now face federal charges in the United States, including wire fraud and money laundering. Investigators say these operations functioned like businesses, with recruitment, management layers and structured systems designed to deceive victims.

Officials made it clear that this effort sends a message. Fraud crosses borders, and enforcement is now doing the same.

How crypto investment scams target victims

These schemes often follow a pattern known as “pig-butchering.” It is a slow, calculated tactic that builds trust before any money is involved.

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A scammer may reach out through social media or a messaging app and start a casual conversation. Over time, that interaction turns more personal. In some cases, it feels like a real relationship. Once trust is established, the topic shifts toward investing, often framed as a unique crypto opportunity.

Victims are guided through setting up accounts and transferring funds to platforms that appear legitimate. The dashboards may even show fake gains to build confidence. At that point, control of the money is already gone. Funds are quickly moved through multiple accounts and eventually end up with the scammers.

Many victims are encouraged to keep going, sometimes borrowing money or taking out loans to invest more. By the time the truth becomes clear, the losses can be devastating.

How Meta Platforms, Inc. helped track scam networks

Meta Platforms, Inc. played a key role in the investigation by providing data that helped law enforcement identify and track these networks.

The company says it has taken aggressive action across its platforms. In 2025 alone, Meta removed more than 159 million scam ads and shut down 10.9 million accounts linked to scam centers. More recently, it disabled over 150,000 accounts connected to these networks as part of a coordinated enforcement effort.

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“Meta is committed to combatting online fraud and scams, and we are proud to partner with law enforcement in these efforts,” Chris Sonderby, Meta’s vice president and deputy general counsel, said. “We applaud the DOJ and FBI for their leadership in holding criminal scammers accountable and protecting American consumers.”

FROM FRIENDLY TEXT TO FINANCIAL TRAP: THE NEW SCAM TREND

Federal authorities announced a sweeping international crackdown that led to at least 276 arrests tied to cryptocurrency scam centers targeting Americans. (Kurt “CyberGuy” Knutsson)

New tools to stop cryptocurrency scams in real time

Meta is also rolling out new protections across its apps to help users spot scams before they get pulled in.

On Facebook, users may see alerts tied to suspicious friend requests, especially when an account shows unusual behavior such as limited connections or inconsistent location details. 

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On WhatsApp, new warnings are designed to prevent scammers from linking their own devices to someone else’s account, giving users a chance to pause before approving a risky request.

Messenger is also expanding its scam detection tools. When a conversation shows patterns linked to common fraud tactics, users may receive prompts that explain the risk and suggest actions like blocking or reporting the account.

Why this cryptocurrency scam crackdown matters to you

This operation highlights how organized these scam networks have become. These are not random messages from a single person. They are coordinated groups running structured operations designed to build trust, create urgency and move money quickly.

Even with hundreds of arrests, the threat remains. New networks continue to emerge, often using the same playbook with slight changes. That means staying informed is still one of the most effective ways to protect yourself. 

Ways to stay safe from cryptocurrency scams

Scammers follow familiar patterns, which means there are clear warning signs you can watch for and simple steps you can take to protect yourself. 

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1) Slow down unexpected connections

If someone you do not know reaches out and quickly builds a personal connection, slow things down and question the situation. Scammers rely on momentum, so taking a pause can help you spot inconsistencies. 

2) Verify investment platforms before sending money

Before sending money to any investment platform, take time to verify that it is legitimate. A professional-looking website or app does not guarantee it is real. Look for independent reviews and official registration details.

3) Avoid sending crypto to unknown sources

Avoid sending cryptocurrency to individuals or platforms you cannot confirm. Once those transactions go through, they are extremely difficult to recover.

4) Watch for pressure and urgency

Be aware of pressure. If someone pushes you to act quickly or invest more, that urgency is often a warning sign.

5) Use strong antivirus protection

Strong antivirus software can help block malicious links, fake investment sites and other threats before they reach you, adding another layer of defense against scam attempts. Get my picks for the best 2026 antivirus protection winners for your Windows, Mac, Android and iOS devices at Cyberguy.com.

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THE ONE THING SCAMMERS CHECK BEFORE TARGETING YOU ONLINE

Meta said it removed more than 159 million scam ads in 2025 and helped investigators track networks tied to cryptocurrency fraud. (Halfpoint/Getty Images)

6) Limit your personal data exposure

Scammers often rely on publicly available information to build trust. Reducing how much of your personal data appears online by using a data removal service can make it harder for them to target you in the first place. Check out my top picks for data removal services and get a free scan to find out if your personal information is already out on the web by visiting CyberGuy.com.

7) Strengthen your account security

It also helps to strengthen your digital security. Enable two-factor authentication (2FA) on your accounts and use trusted security tools to reduce exposure to malicious links and messages.

8) Report scams as soon as possible

If you believe you have been targeted or defrauded, report it to the FBI’s Internet Crime Complaint Center at ic3.gov as soon as possible.

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Kurt’s key takeaways

This global crackdown is a meaningful step forward. It shows what can happen when law enforcement, tech companies and international partners work together. At the same time, these scams are not going away. The tactics will continue to evolve, and new networks will take the place of those that were shut down. Awareness and caution remain your strongest defenses.

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We report a lot about scams but not so much about scammers getting caught. Does this make you feel like real progress is being made in stopping them? Let us know by writing to us at CyberGuy.com.

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Asus chases Elgato with its own secondary touchscreen display

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Asus chases Elgato with its own secondary touchscreen display

Asus’s latest gaming monitor is a little smaller than usual. The ROG Strix XG129C, announced on Friday, is a 12.3-inch touchscreen IPS display that’s intended to be a sidekick for a larger main monitor, similar to the 14.1-inch secondary display in the 2020 Asus ROG Zephyrus Duo 15. It’s a slightly smaller competitor to Corsair’s Xeneon Edge, which has a 14.5-inch display, but the same 720p resolution.

Asus says the XG129C covers 125 percent of the sRGB color gamut and 90 percent of the DCI-P3 color gamut. It also comes with a one-year subscription for the hardware monitoring tool AIDA64 Extreme, which would usually cost $65. Besides acting as a performance monitor for your PC, sidekick displays like this can also be handy as an extension for streaming or editing setups, much like Elgato’s Stream Deck.

Along with the little XG129C, Asus also announced the ROG Strix OLED XG34WCDMS, a 34-inch RGB Tandem QD-OLED gaming monitor. It features a 280Hz refresh rate and a 3440 x 1440p resolution, and, according to Asus, covers 99 percent of the DCI-P3 color gamut. Asus has not yet officially announced pricing for either display.

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