Guard Shift Tracker

Guard Shift Check-In is a lightweight Chrome extension that helps security guards record accurate shift check-ins and check-outs with GPS location, timestamps, and optional geofencing. It works even when location lookup or internet connectivity is unavailable, ensuring that no shift is ever blocked. Key Features One-click Check-In & Check-Out with automatic timestamp recording. Smart GPS Geofencing using the haversine formula with GPS accuracy compensation to reduce false "outside fence" alerts. Optional Geofence Radius that can be disabled by setting the radius to 0. Reverse Geocoding using OpenStreetMap Nominatim to display readable addresses when available, while always storing raw coordinates. Offline-Friendly Operation that records shifts even without an internet connection or when reverse geocoding fails. Flexible Location Handling with options to retry, continue without location, or cancel if GPS access is unavailable. Persistent Shift Tracking that survives popup closure and browser restarts using Chrome local storage. Webhook Integration for sending shift records to any user-configured endpoint with optional permission requests for cross-origin syncing. Reliable Sync Status that marks unsynced records for later review without losing data. Complete CSV Export including timestamps, check-in/check-out coordinates, addresses, GPS accuracy, geofence status, worked hours, and sync status.