Why Apple just bought a startup that can read brain magnetic signals

The acquisition could bring new health and accessibility tools to Apple devices

Apple’s acquisition of startup Sonera brings portable biomagnetic sensing closer to everyday consumer wearables. | ©Image Credit: Jimmy Jin / Unsplash
Apple’s acquisition of startup Sonera brings portable biomagnetic sensing closer to everyday consumer wearables. | ©Image Credit: Jimmy Jin / Unsplash

Apple is making an unusual move into brain-sensing technology, and its latest acquisition could hint at some surprisingly futuristic features coming to its devices. The company has acquired Sonera, a startup developing non-invasive sensors capable of detecting magnetic signals generated by the brain and body — technology that could potentially help people control devices in entirely new ways. But why is Apple interested in reading these faint magnetic signals, and what could the technology actually mean for health and accessibility? The answer could offer a glimpse into where Apple sees the future of human-device interaction heading.

How Sonera’s brain-sensing technology works

For years, monitoring the human nervous system without surgery has generally involved placing electrodes directly on the skin to detect tiny electrical signals. While the approach can be useful, electrical activity can be distorted as it travels through the skull and surrounding tissue, making accurate measurements more difficult.

Sonera took a different approach. The California-based startup developed technology designed to detect the subtle magnetic fields created by electrical activity in the body. Unlike electrical signals, these magnetic fields can pass through body tissue without being distorted in the same way, allowing Sonera’s biomagnetic chip technology to measure neural and muscle activity through the skull without requiring sensors to make direct contact with the skin.

At the center of that technology is Sonera’s proprietary S1 chip. The company previously described its goal as “making brain activity as easy to measure as heart rate, temperature, and other physiological signals.” Sonera also said the technology was “poised to enable an entirely new class of consumer wearables and experiences based on muscle activity.”

That vision could explain why the technology is potentially interesting to Apple. Rather than requiring bulky medical equipment or an invasive procedure, miniature biomagnetic sensors could eventually make it possible to capture information about the body in a form that is more compatible with everyday devices.

New possibilities for health and accessibility

The technology could have applications that extend well beyond conventional fitness tracking. If neural and muscle activity can be monitored continuously and passively, future devices could potentially provide new ways to study changes in how the body functions over time.

By bringing Sonera’s brain-imaging tech into its hardware fold, Apple opens up massive opportunities in preventative care and assistive technology:

  • Neuromuscular Disease Tracking: Continuous, passive monitoring could help detect biomarkers and track the progression of conditions like ALS, Parkinson’s, or motor neuropathies.
  • Advanced Motion and Athletic Insights: High-precision muscular tracking could offer athletes real-time muscle fatigue analysis and recovery data far beyond current wrist-based sensors.
  • Prosthetic and Assistive Integration: The technology could deliver intuitive control options for people with severe mobility impairments, translating slight nerve impulses directly into screen actions.

A different path to hands-free control

Apple’s acquisition is also interesting because it points toward a potential future beyond the traditional touchscreen. Today’s smartphones, computers and wearables largely depend on physical actions: tapping a display, pressing a button, moving a finger or speaking a command. Biomagnetic sensing could eventually add another layer of interaction.

While Elon Musk’s Neuralink relies on invasive surgical implants to connect brain to machine, Apple’s quiet acquisition reveals a far consumer-friendly vision: non-invasive, thought-driven control embedded right into everyday gear.

Imagine micro-sensors embedded inside the headband of an Apple Vision Pro or woven into the band of an Apple Watch. Users could scroll through menus, select virtual objects, or dictate commands simply by intending a gesture or focusing their thoughts — all without lifting a finger or uttering a word.

Those scenarios remain speculative, and there is no indication that Apple has announced such features. Still, by acquiring the underlying chips that make biomagnetic reading portable, Apple isn’t just planning the next health feature; it is laying the foundation for how we will talk to machines in the decades to come.

Sources:
Apple Insider
MacRumors