Digital biomarkers for human physiology
HiiHealth transforms signals captured through everyday cameras and compatible wearables into meaningful measures of human physiology.
Measure what happens between the moments.
Passive monitoring without relying on specialised equipment.
Detect changes earlier, before symptoms.
On-device processing with no face recording.
Our approach
Most wearable technologies translate signals into established measurements such as heart rate or oxygen saturation. HiiHealth takes a ground-up approach: we examine raw digital signals to discover underexplored physiological patterns and develop new biomarkers for health states that have not been easy or affordable to measure.
A new measurement layer between everyday life and traditional clinical testing.
Start with subtle changes in reflected light, movement, circulation, and autonomic activity.
Use clinical insight and signal intelligence to identify physiology that established metrics may miss.
Turn those patterns into repeatable measures for aspects of health that remain difficult to see.
Trusted science
Validated research, real-world outcomes, and insights designed to become useful before they become urgent.
Hydration
Understand fluid balance in real time.
Invisible signal / real insight
Early deterioration
Detect clinical decline sooner.
Invisible signal / real insight
Biological age
Measure aging at a physiological level.
Invisible signal / real insight
Your signal layer is always listening.
Passive camera-based sensing turns tiny changes in light, breath, and motion into a continuous picture of your physiology.
See how sensing worksPhysiological readiness
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Stable
Platform
A unified platform that understands the whole you—connecting patterns that are usually measured separately.
Biomarker portfolio
Three research programs focused on physiology that changes continuously but is still measured only occasionally.
In development
Digital hydration biomarker
Hydration influences energy, cognition, circulation, sleep, and recovery, yet it is still commonly estimated through thirst, urine colour, or fluid intake. HiiHealth is developing a camera-based biomarker that analyses facial video signals to generate a fast, repeatable hydration score.
Designed to complement—not simply count—what a person drinks.
In development
Sepsis & critical-illness biomarker
Sepsis, severe infection, and dengue can worsen before conventional vital signs become clearly abnormal. In collaboration with frontline clinicians in Sri Lanka, we are evaluating microcirculatory, cardiovascular, and autonomic signals to support earlier risk stratification and escalation decisions.
DengueOS extends this work by connecting patient-level risk with community surveillance and public-health response.
In development
Digital biological-age biomarker
HiiHealth is developing a camera-based digital proxy for ageing-related changes in vascular health, microcirculation, and autonomic function. The goal is repeatable tracking of how the body responds to sleep, exercise, nutrition, stress, and metabolic-health interventions.
A digital proxy designed to be calibrated against—not replace—validated biological and epigenetic-age tests.
Our belief
Better visibility changes what is possible: earlier understanding, calmer decisions, and more meaningful care.
We believe health should be understood earlier, more clearly, and more continuously.
Doctor. Engineer. Entrepreneur.
Medicine × AI × human physiology
Founder
Founder and Chief Executive Officer
Dr. Kularathne is a Consultant Emergency Physician, AI engineer, and healthcare entrepreneur working between Singapore and the United States. His career spans adult and paediatric emergency care, clinical leadership, engineering, and public health.
He has authored multiple patents in digital disease screening and biomarker development, founded HeHealth in 2022, and contributed to AI systems for infectious disease screening and primary care. His work has been recognised by the World Health Organization and other global bodies.
Today, he leads HiiHealth’s work at the intersection of frontline medicine, artificial intelligence, and continuous physiological measurement.
Partner with HiiHealth
We collaborate with organisations that can help validate, deploy, and scale clinically meaningful digital biomarkers—from healthcare institutions and research teams to public-health and technology partners.
Start a conversationValidate
Clinical and academic studies that test biomarker performance in real settings.
Deploy
Care, wellness, and research workflows where continuous physiology can add value.
Scale
Technology, public-health, and distribution partnerships across diverse populations.
HiiHealth uses privacy-preserving camera-based sensing to read subtle changes in reflected light, breathing rhythm, and motion—without recording identifiable video.
Insight you can trust. Health you can act on. Join the first group to experience continuous physiological intelligence.
