AR Hands-Free Maintenance Pilot
AR-Guided Automotive Maintenance Workflow

Hands-Free Efficiency
Technicians performed guided maintenance steps without touching devices.
Real-Time Sync
Smartglasses and tablet stayed perfectly synchronized during maintenance workflows.
AR-Based Guidance
Maintenance instructions projected directly into the technician’s field of view.
About
Overview
A major automotive stakeholder explored whether AR smartglasses combined with voice control could enable safer, faster, and more intuitive maintenance workflows. HEPIUS supported the design and execution of a hands-free feasibility pilot focused on combining multiple device modalities into one seamless guided experience.
Scope of the Project
- Hands-free interaction using AR smartglasses.
- Guided workflows using voice commands instead of touch.
- Use of an Android tablet as a synchronized second screen.
- Real-time communication and instruction overlays above the engine.
- Evaluation of feasibility, latency, clarity, and technician usability.
HEPIUS Responsibilities
- Project coordination across technical and stakeholder teams.
- Definition of the technology stack including AWS, Angular, Android, WebRTC, and the smartglasses SDK.
- Design of application flows for AR guidance, step validation, and dual-device synchronization.
- Ensuring all outcomes aligned with safety and operational requirements in workshop environments.
Technology Components
- AR smartglasses with holographic overlays.
- Real-time sync channel between smartglasses and tablet.
- Voice-recognition functionality using cloud-based speech services.
- Serverless backend for workflow logic and step tracking.

Results
Hands-Free Efficiency
- Technicians were able to follow entire maintenance procedures without touching devices.
- Voice-controlled progression through steps reduced interruptions and improved focus.
- The approach demonstrated strong potential for use in dirt-prone, glove-required environments.
Real-Time Sync Across Devices
- Smartglasses and tablet remained perfectly synchronized across all workflow stages.
- Workers viewed the same step progress simultaneously, improving clarity and reducing mistakes.
- The dual-device setup validated feasibility for collaborative or multi-role maintenance tasks.
AR-Based Procedural Guidance
- AR overlays provided clear visual cues directly above the engine, enabling a guided, intuitive workflow.
- Step indicators, arrows, and confirmation checks helped technicians stay aligned without referencing manuals.
- Early testing confirmed strong usability and reduced cognitive load.
Pilot Outcome
- Stakeholders provided positive feedback and confirmed strong interest in continued exploration.
- All goals of the feasibility study were met, validating the approach for next-phase trials.
- Due to NDA constraints, operational details remain undisclosed, but the pilot successfully demonstrated the value of AR-enhanced, synchronized, hands-free automotive maintenance.
