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Quadruped robot plays badminton with you using AI

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Quadruped robot plays badminton with you using AI

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At ETH Zurich’s Robotic Systems Lab, engineers have created ANYmal-D, a four-legged robot that can play badminton with people. 

This project brings together robotics, artificial intelligence and sports, showing how advanced robots can take on dynamic, fast-paced games. 

ANYmal-D’s design and abilities are opening up new possibilities for human-robot collaboration in sports and beyond.

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ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

How does ANYmal-D play badminton with humans?

Badminton is a game that requires quick footwork, fast reactions, and precise hand-eye coordination. To give a robot a chance on the court, the ETH Zurich team equipped ANYmal-D with four legs for stability and agility, a dynamic arm to swing the racket, and a stereo camera to track the shuttlecock. The robot uses a reinforcement learning-based controller, which allows it to predict and react to the shuttlecock’s movement in real-time. ANYmal-D can move around the court, adjust its posture, and time its swings, keeping rallies going with human players for up to 10 shots.

NO TENNIS PARTNER? NO WORRIES WITH THIS AI ROBOT

The technology behind ANYmal-D’s badminton skills

ANYmal-D’s stereo camera serves as its eyes, constantly monitoring the shuttlecock. The robot uses a “perception noise model” to compare what it sees with data from its training, helping it track the shuttlecock even when it moves unpredictably. The robot can pitch its body to keep the shuttlecock in view, mimicking how a human player might lean in for a tricky shot.

ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

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HUMANPLUS ROBOT CAN GO FROM PLAYING THE PIANO TO PING-PONG TO BOXING

Unified reinforcement learning for whole-body control

Coordinating legs and an arm is tough for any robot. The ETH Zurich team developed a unified control policy using reinforcement learning, allowing ANYmal-D to move and swing as a coordinated whole. This system was trained in simulation, so the robot learned how to handle a wide range of shots and situations before stepping onto a real court.

Diagram of the ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

AI HUMANOID ROBOT LEARNS TO MIMIC HUMAN EMOTIONS AND BEHAVIOR

Hardware integration: What’s inside the robot?

ANYmal-D combines a sturdy quadrupedal base with the DynaArm, and its racket is set at a 45-degree angle for effective striking. The robot’s state estimation runs at 400 Hz, the control policy updates at 100 Hz, and the perception system operates at 60 Hz. All of this runs on a Jetson AGX Orin module, making the robot responsive and ready for action.

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ANYmal-D, a four-legged robot that can play badminton with people   (ETH Zurich)

Challenges of playing badminton with a robot

Getting the robot’s legs and arm to work together smoothly is a major challenge. Most robots handle these tasks separately, but this limits agility. By combining locomotion and arm control into a single system, ANYmal-D can adjust its posture and gait based on the shuttlecock’s path, moving more like a human player.

AI TENNIS ROBOT COACH BRINGS PROFESSIONAL TRAINING TO PLAYERS

ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

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Active perception: How ANYmal-D sees the game

Robots don’t have human eyes, so their cameras can struggle with frame rates and field of view. ANYmal-D’s perception-aware controller keeps its camera moving smoothly, always tracking the shuttlecock. The perception noise model helps bridge the gap between simulation and real matches, making the robot more reliable during games.

WHAT IS ARTIFICIAL INTELLIGENCE (AI)?

ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

Real-world deployment: Bringing the robot to the court

Bringing ANYmal-D from the lab to the badminton court meant dealing with practical issues like power limits and communication delays. Despite these challenges, the robot managed to keep up with human players, responding to different shot speeds and landing positions, and maintaining rallies that showcased its adaptability and skill.

ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

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ANYmal-D’s badminton performance: What did the tests show?

In collaborative games with amateur players, ANYmal-D tracked, intercepted, and returned shuttlecocks with impressive consistency. On average, it took about 0.357 seconds to process the shuttlecock’s trajectory after a human hit, leaving just over half a second to get into position and make the shot. While it didn’t return every shot, the robot’s ability to maintain rallies and adjust to the pace of the game highlights how far robotics has come in dynamic sports scenarios.

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ANYmal-D, a four-legged robot that can play badminton with people  (ETH Zurich)

Kurt’s key takeaways

ANYmal-D really shows how far robotics has come, especially when it comes to working alongside people in fast-paced activities like badminton. It’s interesting to see a robot not just keeping up on the court, but actually rallying with human players and adapting to the game as it unfolds. As these technologies keep improving, it’s easy to picture more robots joining us in all sorts of sports and activities, making play and teamwork even more fun for everyone.

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Would you be curious to play a match against a robot like ANYmal-D, or do you think nothing can replace the experience of playing badminton with another human? Let us know by writing us at Cyberguy.com/Contact.

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Technology

The latest iPad Air is $400 for the first time and arrives by Christmas

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The latest iPad Air is 0 for the first time and arrives by Christmas

If you have $400 and want an iPad, your options are usually kind of limited to either just the base iPad, or better yet, the latest iPad Mini — if it happens to be on sale when you’re shopping (it is now, but that’s not always the case). But right now, you should consider getting the 128GB version of Apple’s 11-inch iPad Air with the capable M3 processor. At Target, multiple colors of this model are $399.99, beating the previous low of $449.99 we’ve seen during large-scale deal events. Currently, no other retailer is matching this price. This sale ends Saturday night.

$400 is a sweet price for this model, as it debuted in early 2025 for $600. In terms of how it stacks up to other iPad models, Verge editor-at-large David Pierce said in his impressions that the M3 Air is “exactly what you think it is. Which is fine.” I know, that sounds like a back-handed compliment, but it’s been a while since iPads peaked in terms of utility, design, and fast performance. This one carries the torch in Apple’s tablet dominance, and its M3 processor means it’ll be a fantastic tablet for longer than any other iPad at the $400 price point. Read our in-depth impressions.

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Technology

Facebook settlement scam emails to avoid now

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Facebook settlement scam emails to avoid now

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Millions of Facebook users filed claims in a recent privacy settlement after the platform was accused of mishandling user data. The approved payouts have been rolling out, which means people are watching their inboxes for updates. Scammers know this and are sending look-alike emails that push you to click a “Redeem Virtual Card” button. Arlene B emailed us to share what landed in her inbox.

“I received an email stating that it was from (Facebook User Privacy Settlement Administrator) and that I needed to click on the button below to “Redeem Virtual Card.” Do you know if this is a scam or not?”

Her question shows how convincing these fake messages appear. A real settlement did happen, and people have been getting payments. Still, criminals are now piggybacking on the rollout with messages that look official but lead to dangerous sites that steal your information. Let’s walk through how to tell real emails from fake ones.

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NEW SCAM SENDS FAKE MICROSOFT 365 LOGIN PAGES

Scammers send fake settlement emails that mimic the real payout notices to trick you into clicking. (Kurt “CyberGuy” Knutsson)

How to check if your Facebook settlement email is legitimate

Scammers rely on confusion and urgency. These steps help you confirm the message before you click anything.

Confirm the sender’s address

Real settlement emails come from facebookuserprivacysettlement@notifications.kroll.com. Kroll is the official administrator.

Look for your claimant ID

Real notices include your unique claimant ID and reference the claim you filed last year. Fake emails skip this personalized detail.

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Check where the link leads

Real payout links go to DigitalPay / Veritas or domains tied to krollsettlementadministration. If the link points to a strange or shortened URL, it is likely unsafe.

Watch for common red flags

Pressure to act right away. Clumsy wording or spelling mistakes. A button that goes to a suspicious URL. You never filed a claim in the first place. Any sender address that is not the official Kroll domain.

Remember that you are not required to click anything

If your claim was approved, you have already received a legitimate notice. Emails that say you must “redeem” again or “confirm” payment are signs of a scam.

GEEK SQUAD SCAM EMAIL: HOW TO SPOT AND STOP IT

A quick hover over the “Redeem Virtual Card” button often reveals a suspicious link that gives the scam away. (Kurt “CyberGuy” Knutsson)

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Why scammers target large settlements

Whenever a major payout occurs, criminals blend in with legitimate messages because people expect money and may open emails quickly. When fake notices look similar to real ones, it only takes one careless click for scammers to grab your data.

DON’T FALL FOR FAKE SETTLEMENT SITES THAT STEAL YOUR DATA

A person logging onto Facebook (Kurt “CyberGuy” Knutsson)

Ways to stay safe from settlement scams

Use these simple habits to protect yourself from Facebook settlement scams and any future payout scam.

1) Verify the sender every time

Look at the full address. Scammers often change one character in hopes you will not notice.

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2) Hover over links before tapping

Check the destination without clicking. A strange URL is your warning sign.

3) Never share sensitive information through email

Real administrators do not ask for banking info or logins.

4) Use a data removal service

Data brokers often collect your email address, phone number and other personal details that scammers use to target victims. A data removal service can pull you out of those databases, which reduces the amount of scam email that reaches you in the first place.

While no service can guarantee the complete removal of your data from the internet, a data removal service is really a smart choice. They aren’t cheap, and neither is your privacy. These services do all the work for you by actively monitoring and systematically erasing your personal information from hundreds of websites. It’s what gives me peace of mind and has proven to be the most effective way to erase your personal data from the internet. By limiting the information available, you reduce the risk of scammers cross-referencing data from breaches with information they might find on the dark web, making it harder for them to target you.

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.

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Get a free scan to find out if your personal information is already out on the web: Cyberguy.com.

5) Go directly to the official settlement site

Type in the address yourself instead of using a link from an email.

6) Use strong antivirus software 

Good security software blocks dangerous links and pages. The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have strong antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe.

Get my picks for the best 2025 antivirus protection winners for your Windows, Mac, Android and iOS devices at Cyberguy.com.

7) Delete emails that push urgency

Scammers want fast reactions. Slow down and confirm details. 

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Kurt’s key takeaways 

The Facebook settlement payout created the perfect moment for scammers to slip fake messages into inboxes. Once you know the signs, it becomes much easier to separate real notices from dangerous ones. Stay alert, trust your instincts and verify before you click.

Would you open a payout email if you were not expecting money in the first place? Let us know by writing to us at Cyberguy.com.

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Technology

The first Dolby FlexConnect soundbar is coming from LG

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The first Dolby FlexConnect soundbar is coming from LG

Dolby Atmos FlexConnect technology debuted this year with the TCL Z100 speakers, and now we’re getting our first FlexConnect soundbar thanks to LG. The new H7 soundbar — which runs on the same Alpha 11 Gen 3 chip as LG’s OLEDs and new Micro RGB LED — is a part of the LG Sound Suite, a modular home audio system the company will debut at CES 2026. In addition to the soundbar, the Sound Suite will include the M5 and M7 surround speakers and the W7 subwoofer. All of the speakers feature Peerless Audio components.

The two main drawbacks of TCL’s Dolby FlexConnect implementation were the limitation of only allowing four connected speakers, including a sub, and the need for a 2025 QM series TCL TV. So you needed to pick between better sound coverage with a fourth speaker or more bass performance with a sub. LG’s Sound Suite, on the other hand, will allow you to connect the soundbar with up to four surround speakers and a subwoofer for a potential 13.1.7-channel system.

And while the speakers can be used with a compatible LG TV (including the 2026 premium LG TV lineup and 2025’s C5 and G5 OLEDs), it isn’t required. It’s possible to use the H7 soundbar with any TV — or without — and have it act as what’s called the lead device to connect the surround speakers and sub. LG says there are 27 different speaker configurations possible, from using two speakers as a stereo pair up to the full system with soundbar, surrounds, and sub.

In my experience with the TCL Z100, calibrating FlexConnect speakers to your space is also fast. Once they’re in place and plugged in, a short musical clip is played for a few seconds and then setup is complete. The system is able to know where the speakers are placed and how to optimize the surround and Atmos sound for your room. With other room correction software, the process can take much longer, requiring taking sound readings from multiple locations in the room.

LG is using ultra-wideband technology to adjust the sweet spot based on your listening position that it’s calling Sound Follow. What will be interesting to see with the LG Sound Suite’s Dolby FlexConnect implementation is how customizable it is after setup (for instance, adjusting subwoofer levels).

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I’ll be hearing the system at CES and plan on reviewing the system when it’s available to see how well the technology translates into a home.

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