Give physical AI
a sense of force.

Force-annotated human demonstrations for physical AI. Collect with our Bracelet and API, or use data collected by Hemlock.

Talk to us
The Hemlock Bracelet, a fabric wearable with an array of dry electrodes on its inner surface
Scroll to explore

Muscle signals.
Finger-level force.

The Bracelet uses electromyography (EMG) to read muscle activity at the wrist and estimate the force from each finger.

Original Hemlock animation of a Bracelet-wearing hand closing into a fist as cyan signals travel along the forearm

Two ways to build.

Collect it
yourself.

Use the Bracelet to capture your own tasks, in your own environment. Upload your recordings through our API to get force-annotated data.

Get the Bracelet
Visualization of Bracelet-wearing hands manipulating an egg, with force annotations

Let us
collect it.

Tell us the tasks your robot needs to learn. We collect human demonstrations and deliver force-annotated data for your training pipeline.

Get collected data
Generated first-person visualization of a worker wearing broad Hemlock Bracelets while sorting industrial parts, with finger-skeleton and contact-force overlays

The result.

From human instinct to robot skill. Force-annotated demonstrations capture the touch behind the task.

Visualization of robot hands manipulating and cracking an egg

Delicate manipulation

Generated visualization of a robot sorting industrial parts into the same compartmented tray as the worker, with a frozen contact-force analysis during the grip

Parts pick-and-place

Bring us your task.

Generated illustration of Bracelet-wearing hands using a hex driver to assemble an industrial bracket

Industrial work

Capture skills such as assembly, packing, parts handling, and tool use.

Generated illustration of a worker wearing Hemlock Bracelets while preparing a hospital supply tray

Hospital workflows

Explore tasks such as supply handling, tray setup, and equipment preparation.

Generated illustration of Bracelet-wearing hands opening a glass storage jar at home

Everyday manipulation

From opening containers to handling delicate objects, start with the skills that matter to you.

Motion tells you where.
Force tells you how.

The same movement can use a gentle touch or a firm grip. The Bracelet estimates finger force from muscle signals, adding the information video alone can’t capture.

FORCE OVER TIME Illustrative signal
GraspHoldRelease

What does your robot
need to learn?

Talk to us