About

Synheart HSI is a privacy-first, on-device human-state computing infrastructure that enables systems to understand physiological, cognitive, and behavioral states without exposing raw biosignals or personal data. At its core, Synheart introduces the Human State Vector (HSV), a time-scoped, multi-dimensional, pre-interpretive representation of human state, and the Human State Interface (HSI), a standardized contract for exchanging these representations across systems.

“By decoupling sensing, representation, and interpretation, Synheart HSI defines how human state is represented and exchanged—without dictating what it means—ensuring long-term interoperability, reproducibility, and privacy by construction.”

What We Built

Synheart HSI was designed to address foundational failures in today’s human-state and affective computing ecosystems:

• Fragmentation and vendor lock-in caused by incompatible biosignal pipelines and proprietary summary metrics
• Privacy risks stemming from cloud-based inference and transmission of raw physiological and behavioral data
• Lack of a shared abstraction layer between raw biosignals and application-level semantics
• Poor reproducibility across research studies due to inconsistent feature definitions, windowing, and normalization
• Limited real-time usability caused by latency, connectivity dependence, and opaque model outputs

To solve this, we built:

• An on-device HSV runtime that fuses multimodal physiological and behavioral signals into normalized, time-explicit state representations
• A canonical HSI specification that standardizes validation, versioning, confidence reporting, and exchange of human-state data
• A strict privacy boundary that structurally prohibits raw biosignals, semantic content, and PII from leaving the device
• A modular architecture that allows independent evolution of sensors, models, and interpretation layers

The result is a human-state infrastructure that is efficient, interoperable, and deployable on commodity mobile and wearable hardware.

Our Vision

We envision a future where human-state-aware systems are adaptive without being invasive, and intelligent without being opaque:

• Users benefit from context-aware technology without surrendering control over their physiological or behavioral data
• Human-state representations become portable, comparable, and reproducible across devices, studies, and applications
• Developers build adaptive systems using standardized state interfaces, not brittle vendor-specific pipelines
• Researchers share and validate findings using confidence-weighted, pre-interpretive representations instead of irreproducible proxies
• Privacy, consent, and purpose limitation are enforced at the representation layer, not bolted on afterward

Synheart HSI is not an emotion model or a diagnostic system—it is the infrastructure layer that makes responsible human-state computing possible at scale.

Who Can Use Synheart HSI?

Researchers and Scientists
→ Conduct reproducible, multi-site studies on stress, engagement, affect, and behavior using standardized human-state representations.

Healthcare and Wellness Innovators
→ Build mental health, stress management, and self-tracking tools that operate on-device and respect patient privacy by design.

Human–Computer Interaction & AI Developers
→ Create adaptive interfaces, learning systems, and productivity tools that respond to human state without accessing raw biosignals.

Wearable and Platform Manufacturers
→ Expose human-state capabilities through a stable, interoperable interface without locking users or developers into proprietary formats.