DexEXO: A Wearability-First Dexterous Exoskeleton for Operator-Agnostic Demonstration and Learning

TL;DR

DexEXO introduces a wearable dexterous exoskeleton that enhances operator comfort and cross-user adaptability, enabling scalable demonstration collection and direct policy training from visual data, thereby simplifying robotic learning pipelines.

Contribution

The paper presents DexEXO, a hardware-aligned, wearability-first exoskeleton that supports diverse hand sizes and enables direct visual observation-based policy training, reducing the need for visual post-processing.

Findings

Improved user comfort and usability over prior systems.

Effective policy training using raw visual observations.

Supports a wide range of hand sizes with minimal fitting adjustments.

Abstract

Scaling dexterous robot learning is constrained by the difficulty of collecting high-quality demonstrations across diverse operators. Existing wearable interfaces often trade comfort and cross-user adaptability for kinematic fidelity, while embodiment mismatch between demonstration and deployment requires visual post-processing before policy training. We present DexEXO, a wearability-first hand exoskeleton that aligns visual appearance, contact geometry, and kinematics at the hardware level. DexEXO features a pose-tolerant thumb mechanism and a slider-based finger interface analytically modeled to support hand lengths from 140~mm to 217~mm, reducing operator-specific fitting and enabling scalable cross-operator data collection. A passive hand visually matches the deployed robot, allowing direct policy training from raw wrist-mounted RGB observations. User studies demonstrate improved comfort and usability compared to prior wearable systems. Using visually aligned observations alone, we train diffusion policies that achieve competitive performance while substantially simplifying the end-to-end pipeline. These results show that prioritizing wearability and hardware-level embodiment alignment reduces both human and algorithmic bottlenecks without sacrificing task performance. Project Page: https://dexexo-research.github.io/