HeartbeatSDK #

Standalone smartwatch monitoring infrastructure for life-safety applications.

HeartbeatSDK is a software infrastructure designed for smartwatches that operates independently — no paired smartphone required. It manages activity sessions, transmits real-time availability signals (Heartbeats) to the cloud, and powers a monitoring portal for operators and lifeguards.

SDK Public API #

import 'package:heartbeat_sdk/heartbeat_sdk.dart';

// Initialize the SDK
final sdk = HeartbeatSDK();
await sdk.configure(serverUrl: 'https://heartbeat-api.onrender.com', deviceId: 'watch_001');

// Open a session
await sdk.openSession(
  userId: 'user_42',
  userAge: 25,
  activityType: 'swimming',
);

// Start heartbeat transmission (every 10 seconds)
sdk.start(interval: Duration(seconds: 10));

// Close session when done
await sdk.closeSession();

Key Features #

• Session Management — Open/close activity sessions with user validation (18+)
• Autonomous Heartbeat Transmission — Background timer sends availability signals
• Offline-First — Local caching when disconnected, auto-sync on reconnect
• Crash Analytics — Captures errors before shutdown, transmits on next boot
• Haptic Control — Disables vibration during sessions to prevent distractions

Use Cases #

• 🏊 Marine Rescue — Monitoring swimmers and surfers (SaveMe)
• 👴 Elderly Care — Continuous monitoring for distress detection
• 🏔️ Extreme Sports — Tracking lone workers and athletes