Cookies & Storage

Storage Policy
PWSGUIDE.com

Last Updated: July 12, 2026. This policy explains our use of cookies and local client-side storage technologies.

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1. Purpose of Local Storage on PWSGUIDE.com

Unlike conventional websites, PWSGUIDE.com is designed as an offline-first Progressive Web Application (PWA). Because mariners cruise in remote fjords and bays throughout Prince William Sound with no cellular data coverage, our platform must store essential components locally on your device to remain functional.

We use small browser data files (cookies, `sessionStorage`, `localStorage`, and Cache Storage databases) strictly to support core application functions, handle disclaimer state checks, and support offline capabilities.

2. Data Types We Store Locally

  • Local Storage (`localStorage`): We write a key named pwsguide_disclaimer_accepted to your browser memory when you click "I Understand & Agree" on our initial disclaimer overlay. This prevents the modal from re-blocking your view as you browse between pages or during subsequent visits. We also use localStorage to save your accessibility display settings (such as text size and high-contrast toggles) and cookie banner consent choice.
  • App Cache (Cache Storage API): Our Service Worker (`sw.js`) caches static files (such as sitemaps, fonts, icons, layout pages, and base maps tiles) directly to your browser's disk cache. This enables the app to launch instantly and load map routing resources even with your device in complete airplane/offline mode in wilderness areas.

3. Third-Party Analytics

We use Cloudflare Web Analytics to monitor site performance and traffic patterns. This service operates in a completely cookie-free and tracking-free manner. It does not write any cookies, store local storage variables, or track you across the web.

🔒 PRIVACY BY DESIGN: NO TRACKING OR TARGETED ADS Four Media Group LLC does NOT use tracking pixels, cross-site beacons, or marketing cookies. We do not partner with third-party advertising networks to show targeted ads. All storage cookies and caches serve only functional, maritime planning utilities.

4. How to Manage or Delete Storage

You have full control over the local files stored on your device. You can manage or delete cookies and site storage at any time:

  1. Through your browser settings (e.g., "Clear Browsing Data", "Cookies and Site Data").
  2. By uninstalling the PWSGUIDE Progressive Web Application (PWA) from your mobile home screen or computer dashboard.
  3. By utilizing your browser’s Private/Incognito browsing mode, which automatically purges all localStorage and sessionStorage keys upon closing the window.