You pinch your thumb and forefinger together in the empty air in front of you, and you feel the click. It’s a subtle, localized buzz, a tiny muscle twitch against the skin of your wrist. The gesture you just made, a simple pinch to select a virtual object, has been registered not just by a camera in a headset but by sensors strapped to your arm, and it has answered back with a tactile nudge. This is the foundational interaction Fether Labs is building toward: a wristband that knows where your hands are and can talk back to them.
Founded in 2024 and spun out of Imperial College London, Fether Labs is a pre-seed hardware startup aiming to replace the clunky controllers and finicky camera-based hand tracking of today’s extended reality (XR) with a more intimate, always-on alternative [Jacques Blagburn - Fether Labs | LinkedIn]. Their product, described on their site as “wristbands that track your hands all around you and give you a sense of touch,” seeks to make interacting with virtual objects feel as natural and responsive as manipulating physical ones [Fether Labs]. The bet is that the path to intuitive XR control runs up your arm, not through a lens.
The Wedge Is a Wristband
The company’s core insight is one of anatomy and ergonomics. Today’s most advanced headsets, like the Apple Vision Pro or Meta Quest Pro, rely on outward-facing cameras to infer hand position and gesture. It’s a clever workaround, but it has limitations. Your hands can leave the frame. Lighting conditions can confuse the algorithms. And there’s no physical feedback, no confirmation of a virtual button press or the weight of a digital tool. Fether Labs proposes moving the sensing apparatus from the head to the wrist, using a combination of inertial measurement and, according to one description, monitoring “tendon dynamics” to achieve precise, natural gesture control [Patrick Sanchez Ayala - EY | LinkedIn]. This is paired with haptic actuators to provide that missing sense of touch.
The form factor itself is the wedge. A wristband is less obtrusive than a controller, more personal than a camera, and always accessible. The company explicitly frames its mission as “Wristbands to redefine how we control all devices, starting with AR glasses” [Onstage (Magpie Ventures), 2025]. This starting point is crucial. While the technology could apply to virtual reality, augmented reality glasses represent a more immediate and perhaps more challenging beachhead. They are meant to be worn all day, in the real world, where carrying separate controllers is a non-starter. If Fether Labs can make its bands lightweight, comfortable, and powerful enough for precise AR interaction, it carves out a defensible hardware niche in a market currently dominated by software solutions.
A Team Built for the Long Game
The founders bring a blend of deep-tech academic rigor and seasoned Silicon Valley operational experience, a combination well-suited for the long, capital-intensive road of hardware development.
- Jacques Blagburn, CEO. A co-founder from Imperial College with a background spanning the NHS and other technical roles, Blagburn provides the scientific and research foundation for the spinout [RocketReach].
- Michael Ma, CTO. Ma is the venture-scale operator in the group. He was a General Partner at Liquid 2 Ventures and, before that, sold his Y Combinator-backed startup TalkBin to Google in 2011, later serving as a lead product manager at the search giant [Forbes]. His experience navigating an acquisition and building at scale is a rare asset for a pre-seed hardware company.
- James Choi, CSO. Another Imperial College co-founder, Choi rounds out the technical leadership focused on the sensor and haptic technology [Fether Labs].
The company has attracted early backing from Keen Venture Partners and participated in the Magpie Ventures Onstage W25 demo day, a signal of investor interest in a tough hardware category [Onstage (Magpie Ventures), 2025]. While the exact pre-seed raise is undisclosed, public estimates place it between £250,000 and £500,000 (estimated) [Onstage (Magpie Ventures), 2025].
| Role | Name | Prior Experience |
|---|---|---|
| CEO & Co-Founder | Jacques Blagburn | Imperial College London spinout lead [Jacques Blagburn - Fether Labs |
| CTO & Co-Founder | Michael Ma | Ex-Liquid 2 Ventures GP; sold TalkBin to Google [Forbes] |
| CSO & Co-Founder | James Choi | Imperial College London researcher [Imperial College London] |
Where the Wheels Could Come Off
Fether Labs is entering a field already crowded with ambitious attempts to solve the XR input problem. Competitors range from established players like Meta’s own research into haptic gloves to startups like Mudra Band, which also uses a wristband for AR control, and Doublepoint, which focuses on fine-grained gesture detection. The technical hurdles are significant. Achieving sub-millimeter accuracy in hand tracking from the wrist, without the line-of-sight advantage of headset cameras, is an unsolved problem at consumer-grade size and power budgets. Then there is the business model challenge: selling a peripheral into an ecosystem dominated by a few giant platform owners. Will Apple, Meta, or Google open their protocols to a third-party wristband, or will they seek to build the functionality directly into their own devices or operating systems?
The company’s current positioning as a B2B developer tool or a potential component supplier to headset OEMs is the logical first step, but it is an unproven path. There are no publicly announced customer partnerships or developer integrations. The next twelve months will be about moving from a compelling prototype, demonstrated at events like the Magpie demo day, to a manufacturable product in the hands of early adopters who can build the experiences that prove the wristband’s worth.
For now, Fether Labs operates in the speculative space before the platform wars of spatial computing have been decided. Its technology asks a subtle but profound question about our relationship with machines: as we seek to blend the digital and physical worlds more seamlessly, where does the interface truly live? Is it in our field of view, or is it on our bodies, a layer closer to our nerves? The click felt on the wrist during an imaginary pinch is an early answer, a small vote for the latter.
Sources
- [Fether Labs] Wristbands for XR hand tracking and haptics | https://www.fetherlabs.com/
- [Onstage (Magpie Ventures), 2025] Fether Labs profile for Onstage W25 demo day | https://www.onstage.vc/focals/fether-labs
- [Patrick Sanchez Ayala - EY | LinkedIn, 2026] Post on tendon dynamics monitoring | https://uk.linkedin.com/in/patricksanchezayala
- [Jacques Blagburn - Fether Labs | LinkedIn, 2026] Profile noting Imperial College spinout | https://www.linkedin.com/in/jacquesblagburn/
- [Forbes, 2026] Michael Ma biography | https://www.forbes.com/profile/michael-ma/
- [Imperial College London, 2026] James Choi association | https://www.linkedin.com/in/jamesjunesikchoi/
- [RocketReach, 2024] Jacques Blagburn background | https://rocketreach.co/jacques-blagburn-email_372188968