Mudra's EMG Sensors: Reimagining Wrist-Based EMG

EMG, Reinvented for the Wrist

Mudra’s SNC sensors pick up EMG signals from your wrist, processes them with powerful algorithms, and converts them into digital commands. The result? Instant, touch-free control of your devices, powered by the natural movement of your fingers.

By: Ariel Amar

Mudra’s sensors are a breakthrough in wrist-based sEMG.

But what is EMG anyway, and how does it work?

EMG
Your Muscles Whisper - We Listen

Just like a microphone captures sound waves in the air, EMG sensors detect the tiny electrical signals that travel through your muscles every time you move.

EMG reads these signals by placing sensors on your skin.

sEMG?
Reading Signals - Right from the Surface

[Meta is also developing its own sEMG wristband for the Orion AR glasses, shown on the left]

Surface EMG (sEMG) allows us to measure muscle activity by placing sensors on the skin’s surface.

It’s a powerful, non-invasive way to detect movement - but as signals pass through layers of skin, they can lose strength and clarity, making it difficult to capture precise muscle intent.

"It's All in the Wrist"

Why the wrist? It’s a natural place for wearables - think watches.

Plus, it’s right where the three main nerve bundles run, making it the perfect spot to capture precise muscle signals.

And thanks to its oval shape, sensors stay stable, even while you move.

sEMG for the Wrist?
It Didn't Exist.

Traditional sEMG sensors were designed for primary muscle groups, capturing signals from the muscle belly - not for the faint, subtle signals of the wrist. So we engineered a new kind of sensor to pick up EMG signals with unmatched precision.

The signals at the wrist are faint, distant from the forearm muscles they originate from, and easily drowned out by noise. These are major engineering challenges - capturing them with precision required an entirely new approach - an approach called SNC.