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What is rPPG? The science that turns the camera already in your customer's pocket into a clinical-grade health scanner. Every heartbeat sends a pulse of blood under the skin, causing micro-color shifts that are invisible to the human eye but unmistakable to a modern camera sensor. Remote photoplethysmography (rPPG) reads those signals using the same physics that powers a hospital pulse oximeter, then decodes them into 346 biomarkers in a single 60-second face scan. Heart rate, blood pressure, HRV, oxygen saturation, stress, biological age, skin health, and hundreds more. No clamps. No wearables required. No bloodwork. Just look at the camera.
In addition, the app connects directly to the iPhone Health app and Google Fit on Android, pulling weight, sleep, glucose, blood pressure, cycle, and every third-party data source the user has already authorized. When the user is wearing an Apple Watch, Fitbit, Garmin, or Oura ring, continuous heart rate, HRV, SpO2, ECG, sleep stages, and activity data stream in alongside the camera scan, turning a single snapshot into a longitudinally validated reading.
| Field | Status | Applicable Scans | Why It's Needed |
|---|---|---|---|
| Date of Birth / Age | Required | All scans | 60-70% of markers need age — BP, HRV, SpO2, skin age, pupil norms, voice baseline, all risk scores use age-normalized ranges |
| Biological Sex | Required | All scans | BP, HR, HRV, hemoglobin thresholds, voice pitch baselines, cardiac output, skin thickness all have sex-specific norms |
| Height | Required | 👤 Face ☝ Fingertip | BP estimation from pulse transit time, PWV calculation, BSA for cardiac index — not needed for Pupil, Voice, Palm, or Motion scans |
| Weight | Required | 👤 Face ☝ Fingertip | BMI, body surface area, cardiac index, metabolic markers — not needed for Pupil, Voice, Palm, or Motion scans |
| Fitzpatrick Skin Type (I-VI) | Auto-Detect | 👤 Face 🔍 Skin 🌈 Spectral ✋ Palm | Auto-detected via CIE-Lab L* analysis. Critical for rPPG channel weighting, SpO2 calibration, and spectral analysis. Not needed for Pupil, Fingertip, Voice, or Motion scans. |
| Known Medical Conditions | Recommended | All scans | Hypertension, diabetes, anemia, Parkinson's, concussion history, depression — context for markers across all scan types |
| Current Medications | Recommended | All scans | Beta blockers: HR/HRV. Pupil-dilating drops: Pupil AI Scan. Opioids: constrict pupils (pain index confound). SSRIs: voice prosody. Stimulants: pupil dilation. |
| Fitness Level | Recommended | 👤 Face ☝ Fingertip | Athletes have resting HR 40-55 bpm and 2-3x higher HRV — without context these flag as bradycardia |
| Pregnancy Status | Recommended | 👤 Face ☝ Fingertip 🌈 Spectral ✋ Palm | HR +10-20 bpm, BP changes per trimester, physiological anemia, palmar erythema is normal in pregnancy |
| Recent Head Injury | Recommended | ㈰ Pupil | Critical for concussion screening (#127). Records time since injury for longitudinal tracking. Flags urgency level. |
| Known Neurological Conditions | Recommended | ㈰ Pupil 🎤 Voice 🎬 Motion | Parkinson's, essential tremor, MS, prior TBI — provides baseline context for tremor detection, voice biomarkers, and pupillometry |
| Pain Level (current, 0-10) | Optional | ㈰ Pupil | Self-reported pain scale anchors objective pupil-based pain index (#128). Comparison validates the measurement. |
| Smoking Status | Optional | 👤 Face 🔍 Skin 🌈 Spectral | COHb falsely elevates SpO2, accelerates skin aging, increases arterial stiffness |
| Time of Last Meal | Optional | 👤 Face ☝ Fingertip | Postprandial HR +10-15 bpm, BP drops 10-20 mmHg. Also affects fingertip glucose trend (#133) |
| Caffeine / Alcohol (last 2hr) | Optional | 👤 Face ☝ Fingertip ㈰ Pupil | Caffeine: HR +5-10, BP +5-15, constricts pupils. Alcohol: vasodilation, flushing, dilates pupils. |
| Current Emotional State | Optional | 👤 Face ㈰ Pupil 🎤 Voice | Stress anchoring for pupil dilation, voice prosody analysis, and HRV stress markers. Validates algorithmic detection. |
| Eye Drops (last 4hr) | Optional | ㈰ Pupil 👁 Eye | Dilating drops (tropicamide, atropine) invalidate pupillometry. Redness-reducing drops mask scleral analysis. Must note type. |
Bioresonance / electromagnetic frequency-based biomarkers using a bone conduction headset. Not yet incorporated into the live scanner — this is the roadmap module that adds 100+ markers when shipped.