Technology
China’s ultrasound brain tech race heats up
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When you hear “brain-computer interface,” you probably picture surgery, wires and a chip in your head. Now picture something quieter. No implant. No incision. Just sound waves directed at the brain.
That is the approach behind a new wave of ultrasound brain-computer interface companies in China. One of the newest is Gestala, founded in Chengdu with offices in Shanghai and Hong Kong. The company says it is developing technology that can stimulate and eventually study brain activity using focused ultrasound.
Yes, the same basic technology is used in medical imaging. But this time, it targets neural circuits.
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Brain imaging highlights the regions researchers study as companies explore noninvasive ultrasound brain-computer interface technology. (Kurt “CyberGuy” Knutsson)
What is an ultrasound brain computer interface?
Most brain-computer interface systems rely on electrodes that detect electrical signals from neurons. Neuralink is the most visible example. It places tiny threads inside the brain to record activity. Ultrasound works differently.
Instead of measuring electrical signals directly, it uses high-frequency sound waves. Depending on intensity and focus, those waves can:
- Create images of internal tissue
- Destroy abnormal tissue such as tumors
- Modulate neural activity without open surgery.
Focused ultrasound treatments are already approved for Parkinson’s disease, uterine fibroids and certain tumors. That clinical history gives companies like Gestala a foundation to build on. However, studying or interpreting brain signals with ultrasound is far more complex than delivering targeted stimulation.
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Unlike implant-based systems such as Neuralink, ultrasound brain computer interface research focuses on stimulating the brain without surgery. (Neuralink)
How Gestala plans to treat chronic pain with focused ultrasound
Gestala’s first product is focused on chronic pain. The company plans to target the anterior cingulate cortex, a brain region linked to the emotional experience of pain. Early pilot studies suggest that stimulating this area can reduce pain intensity for up to a week in some patients. The first-generation device will be a stationary system used in clinics. Patients would visit a hospital for treatment sessions. Later, the company plans to develop a wearable helmet designed for supervised use at home. Over time, Gestala says it wants to expand into depression, other mental health conditions, stroke rehabilitation, Alzheimer’s disease and sleep disorders. That is an ambitious roadmap. Each condition involves different brain networks and clinical hurdles.
Can ultrasound read brain activity without implants?
Like other brain tech startups, Gestala is also exploring whether ultrasound could help interpret brain activity. The long-term concept is straightforward in theory. A device could detect patterns linked to chronic pain or depression, then deliver stimulation to specific regions in response.
Unlike traditional brain implants, which capture electrical signals from limited areas, an ultrasound-based system may have the potential to access broader regions of the brain. That possibility is one reason researchers are paying attention. Still, translating that concept into reliable data is a major engineering challenge.
The global race to build noninvasive brain interfaces
China is not alone in exploring ultrasound brain-computer interface systems. Earlier this month, OpenAI announced a significant investment in Merge Labs, a startup cofounded by Sam Altman along with researchers linked to Forest Neurotech.
Public materials from Merge Labs mention restoring lost abilities, supporting healthier brain states and deepening human connection with advanced AI. That language signals long-term ambitions. Yet experts caution that real-world applications are still years away.
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Researchers use MRI guidance to precisely target the anterior cingulate cortex with focused ultrasound during chronic pain studies. (Gestala)
The technical limits of ultrasound brain interfaces
Ultrasound faces technical limits. First, the skull weakens and distorts sound waves. That makes it harder to obtain precise signals. In research settings, detailed readouts of neural activity have required special implants that allow ultrasound to pass more clearly than bone.
Second, ultrasound measures changes in blood flow. Blood flow shifts more slowly than electrical firing in neurons. That delay may limit applications that require fast, detailed signal decoding, such as real-time speech translation. In short, stimulation is one challenge. Accurate readout is another level entirely.
What this means to you
Right now, this technology is experimental. You are not about to buy a brain helmet at your local electronics store. Still, the direction matters. If noninvasive ultrasound devices can reduce chronic pain or support mental health treatment, more patients may consider therapy without facing brain surgery.
At the same time, devices that analyze brain states introduce new privacy questions. Brain-related data is deeply personal. Regulators, hospitals and companies will need clear rules about how that data is stored, shared and protected. Finally, the link between AI companies and brain interface startups shows how closely digital intelligence and neuroscience are becoming intertwined. That connection could reshape medicine, wellness, and even how we interact with technology.
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Kurt’s key takeaways
Brain-computer interfaces used to feel far off and experimental. Now they are a serious focus of global research and investment. China’s push to develop an ultrasound-based brain-computer interface adds momentum to a field already shaped by companies like Neuralink and new ventures backed by OpenAI. Progress is steady but measured. The potential is significant. The technical hurdles are real. What happens next will depend on whether researchers can turn promising lab results into safe, reliable treatments people can actually use.
If sound waves could one day interpret your mental state, who should decide how that information is used? Let us know by writing to us at Cyberguy.com.
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Copyright 2026 CyberGuy.com. All rights reserved.
Technology
DJI’s new Mic Mini 2 adds colorful covers to help them blend in
As with the Osmo Pocket 4 and recent Lito drones, DJI has no plans to release the Mic Mini 2 in the US, but it’s now available in most other markets. Pricing starts at €59 (around $69) for a bundle that includes a single mic transmitter, a compact USB-C wireless receiver, and a smaller charging case. There are several additional bundles available, including a €99 (around $116) option with two mic transmitters, a larger version of the wireless receiver that can be used with cameras, and a charging case large enough to accommodate them all. Obsidian black and glaze white magnetic covers are included, while 12 more colorful alternatives are sold separately.
The Mic Mini 2 transmitters are slightly larger and a gram heavier than the originals as a result of the redesign that accommodates the covers. But they’re much smaller than the Insta360 Mic Pro’s transmitters that will feature a customizable color E Ink screen. Battery life remains the same at 11.5 hours for the Mic Mini 2 with ANC turned off and 10.5 hours for the receiver, while the wireless transmission distance still maxes out at just over 1,312 feet. There’s still no redundant on-mic recording, but DJI teased a Mic Mini 2S version with that feature as part of today’s announcement that it claims will be announced this summer.
Technology
You could get paid from Google’s Android data lawsuit
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If you use an Android phone, there is a good chance this case affects you. Google has agreed to a $135 million settlement over claims that its Android system used people’s cellular data without permission. The part that caught our attention is when it allegedly happened.
According to the lawsuit, these data transfers could take place in the background, even when your phone was not in use. Most people assume that if their screen is off, nothing is happening. That isn’t always the case.
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The lawsuit claims Android software sent data to Google in the background, even when the phone was not in use. (John Keeble/Getty Images)
What the lawsuit says your Android phone was doing
At the center of this case is how Android handled background activity. The lawsuit claims Android devices were sending information back to Google servers without clear user consent. This reportedly happened over cellular networks, which means it may have used data you were paying for.
That detail matters. If something runs over Wi Fi, most people do not think twice about it. Cellular data is different. It is limited for many users and often tied to monthly costs.
The plaintiffs argue that Google could have restricted these transfers to Wi Fi. Instead, they say the system used cellular connections, which shifted the cost to users. Google has denied wrongdoing but agreed to settle the case.
“We are pleased to resolve this case, which mischaracterized standard industry practices that keep Android safe. We’re providing additional disclosures to give people more information about how our services work,” José Castañeda, a Google spokesperson, told CyberGuy.
Who may be included in the settlement?
This case covers a huge number of people. If you used an Android device on a cellular network at any point after November 12, 2017, there is a good chance you are part of the group. The only major exception is if you are already included in a similar case called Csupo v. Google LLC. Estimates suggest around 100 million users could qualify. That makes this one of the larger consumer tech settlements tied to everyday phone use.
How much you might actually receive
Before you start planning how to spend it, this is likely to be a modest payment. The settlement fund is $135 million. When that is divided across millions of people, the amount per person will depend on how many claims are filed. In most cases like this, payments tend to be small. Think of it as getting reimbursed for something you did not realize was costing you.
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The case focuses on whether those background transfers used cellular data that users were paying for. (Kury “CyberGuy” Knutsson)
How to claim your payment
The process is already underway, but it is simpler than most people expect. In many cases, you do not need to file a full claim form to be included. If you qualify, you are already part of the settlement unless you choose to opt out.
That said, there are a few steps worth taking to make sure you actually get paid.
- Start by checking your email or physical mail for a notice about the settlement. Some users are receiving a class member ID or notice code, which makes the process faster.
- Next, visit the official settlement website at federalcellularclassaction.com and confirm your eligibility. This is also where you can enter or update your payment details. You will typically be able to choose how you want to receive your money, including options like direct deposit or popular payment apps.
- If you do nothing, you may still receive a payment automatically, but there is a higher chance of delays or missed payments if your information is outdated. You only need to take extra steps if you did not receive a notice, your contact details have changed, or you want to opt out or object to the settlement.
The timeline you need to know
There are a couple of important dates to keep in mind. The deadline to opt out or object to the settlement is May 29, 2026. The final approval hearing is scheduled for June 23, 2026. If the court approves the deal, payments will follow after that process wraps up.
Why this situation matters beyond the settlement
This case taps into something bigger than one payout. Smartphones are designed to stay connected at all times. That includes background activity that most people never see. While that constant connection powers useful features, it also creates gray areas around consent and cost.
Situations like this raise a simple question. How much do you really know about what your phone is doing behind the scenes? It also puts pressure on companies to be clearer about how data is used and when it is being transmitted.
We reached out to Google for comment, but did not hear back before our deadline.
The $135 million settlement could lead to payments for Android users who used cellular data after 2017. (Kurt “CyberGuy” Knutsson)
What the Android data lawsuit means for you
Even if the payout ends up being small, the takeaway here matters more than the money. Your phone may be using data in ways you do not notice. That includes apps you rarely open and system services running in the background. Taking a few minutes to check your settings can give you more control.
Check which apps are using background data
(Settings may vary depending on device manufacturer)
Samsung/Android: Go to Settings > Connections > Data usage > Mobile data usage > then tap an app to see its data use and background activity.
Limit background data for specific apps
(Settings may vary depending on device manufacturer)
Samsung/Android: Go to Settings > Connections > Data usage > Mobile data usage > tap an app > toggle Allow background data usage off
This stops the app from using cellular data when you are not actively using it.
Reduce data use for updates and backups
(Settings may vary depending on device manufacturer)
Go to Settings > Software update > Auto download > Using Wi-Fi only
For apps, open the Google Play Store > tap your profile > Settings > Network preferences > App download preference > choose Over Wi-Fi only > OK
These small changes can help you avoid using cellular data without realizing it and give you more visibility into what your phone is doing behind the scenes.
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Kurt’s key takeaways
This case is a reminder that the devices we rely on every day are doing more than we see. Most of the time, that works in your favor. Sometimes, it raises questions about transparency and control. Google chose to settle without admitting fault. That leaves room for debate about what really happened. It also highlights how quickly technology can outpace what users expect or understand. As phones become even more connected, these kinds of cases will likely keep coming.
Should companies like Google be allowed to use your cellular data in the background without clear permission, even if it powers features you rely on every day? Let us know your thoughts by writing to us at CyberGuy.com
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Technology
Google is testing AI chatbot search for YouTube
Google is trying out an AI Mode-like search experience for YouTube. The company is now testing “a new way to search on YouTube that feels more like a conversation,” with results pulling in things like longform videos, YouTube Shorts, and text about what you’re searching for. The “experiment” is now available if you’re a YouTube Premium subscriber in the US who is 18 or older.
I turned it on for my account. Now, in the search bar, I see an “Ask YouTube” button, and clicking the search bar shows prompts to ask like “funny baby elephant playing clips,” “summary of the rules of volleyball,” and “short history of the Apollo 11 moon landing.” If I keep the search box blank but click the Ask YouTube button, YouTube takes me to a full page with suggested searches and a text box to ask a question.
When you search with Ask YouTube, YouTube briefly shows a mostly-blank page with a loading icon, and after a few seconds, fills it out with text and details. I tested it with the “short history of the Apollo 11 moon landing” prompt. At the top of the results was a bunch of text summarizing the mission, including a bulleted list of milestones like the date of the lunar landing and Neil Armstrong’s first step on the Moon. Then, the page included a video about the launch timestamped to a section about the launch day from a channel called “The Life Guide,” followed by galleries of videos under headers like “From Launch to Splashdown,” “Historic Footage and Behind-the-Scenes,” and a series of Shorts about “Moments on the Surface.” (I assume YouTube is pulling the text for these sections from the videos highlighted in the search results.)
At the end, the page has a few more suggested prompts, including “Who were the Apollo 11 astronauts” and (perhaps worryingly) “Apollo 11 conspiracy theories,” and a text box I can use to ask a follow-up question or start a new search. I clicked the “Who were the Apollo 11 astronauts” and got a new, slightly differently-formatted set of results, including a grid with background about astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins. Searching for “Apollo 11 conspiracy theories” just showed a typical list of YouTube search results, however.
I threw Ask YouTube another test to see how it fared with something I’m very familiar with: Valve’s new Steam Controller, which I published a review of today. I asked, “What is the Steam Controller,” and YouTube gave an overview of the controller, pointed to Valve’s new video about the controller, and highlighted both longform reviews and a “Quick Hands-On Reviews” section featuring Shorts (including our new Short published today and one from last November).
It was all mostly right, but I did catch a factual flub: YouTube claimed that the old, discontinued Steam Controller had no joysticks, when it actually has one. It was a reminder that, as potentially useful as these AI-created search result pages might seem, you need to do your due diligence to make sure they’re accurate.
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