ShiftGuard

ShiftGuard is a mobile + wearable companion that detects fatigue risk during safety-critical work (driving, warehousing, manufacturing, security). It combines smartwatch signals (heart rate, HRV, motion, sleep debt) with short, low-friction check-ins to estimate when a worker is likely impaired. When risk rises, it nudges the user with discreet haptics and suggests a concrete micro-action: hydrate, 2-minute walk, caffeine timing, or a mandated break. For supervisors, it offers a privacy-preserving dashboard that shows only aggregated risk levels by team/shift—no raw biometrics—so companies can reduce incidents without turning it into surveillance. The MVP focuses on Apple Watch and Wear OS, with optional integration to Oura/Whoop for better sleep debt. This is an AI + traditional app: AI for risk scoring and personalization, traditional for compliance, scheduling, and reporting.