A new wearable device that looks like a simple hat could soon change the way people interact with computers. The prototype, developed by Silicon Valley startup Sabi, uses brain-computer interface (BCI) technology to convert a user’s internal speech into text, allowing them to effectively “type” with their thoughts.
According to a report from WIRED, the device is designed to be one of the least intrusive brain-tech wearables yet, avoiding the bulky, futuristic look of many experimental headsets. Instead, it blends in with everyday clothing, making it more practical for everyday use.
A wearable that listens to your thoughts
The hat works using electroencephalography (EEG), a non-invasive method that reads electrical signals from the brain through the scalp. Unlike implant-based systems like those being developed by companies like Neuralink, Sabi’s approach does not require surgical intervention.
The goal is to recognize “internal speech” – the words people think but don’t say out loud – and convert them into text on a connected device. If successful, it would allow users to communicate or control devices without speaking or typing.
To improve accuracy, the cap reportedly contains tens of thousands of miniature sensors, far more than traditional EEG devices. This high-density sensing is designed to capture more detailed neural signals and help the system better interpret the user’s thoughts.
Why this approach is important
Brain-computer interfaces are not new, but most existing systems fall into two categories: invasive implants or bulky external hardware. Both approaches have limited mainstream adoption due to medical risks, costs, or usability challenges.
Sabi’s hat takes a different approach by focusing on comfort and accessibility. The device is designed to be ready to use out of the box without the need for daily calibration, which is a major limitation with many BCI systems.
Initial targets assume a typing speed of around 30 words per minute, with the possibility of improvement as users become more familiar with the system.
This could open up new use cases, from accessibility tools for people with disabilities to hands-free computing for everyday users.
The Challenges of Mind Reading
Although promising, the technology faces significant hurdles. Brain signals vary greatly from person to person, and even the same thought can evoke slightly different neural patterns each time.
To address this problem, Sabi is developing a large-scale AI model trained on thousands of hours of brain data collected from volunteers. The goal is to identify patterns that correspond to the internal language of different users.
However, experts warn that “mind reading” remains a complex and often overrated concept. Current systems can decipher limited patterns or commands, but translating continuous, natural thoughts into text is still an evolving challenge.
Data protection and ethical issues
One of the biggest concerns surrounding this technology is privacy. Neural data is deeply personal and potentially reveals thoughts, intentions and cognitive patterns.
Sabi says they are addressing this issue by encrypting data and working with neurosecurity experts to ensure safe handling. Still, the broader discussion about brain data rights and ethical use is likely to grow as we move closer to commercialization of such devices.
What comes next
The company aims to launch its first consumer version of the hat – and a cap variant – by the end of 2026.
If successful, the device could represent a shift toward more subtle, everyday brain-computer interfaces that integrate seamlessly into daily life.
At the moment, the idea of typing with your thoughts may seem futuristic. But with devices like this hat, the future looks a lot more wearable — and a lot less intrusive.
