Cookies and Browser Storage

Overview

This site uses the Web Storage API to store data locally in your browser. No cookies are set by this application. GitHub Pages (the hosting provider) may set cookies as part of standard web platform practices.

All storage is under your control. You may inspect, delete, or disable it at any time.

Browser Storage Keys

Role and Viewing History

Key: semper-admin.role.v2
Type: localStorage (persists across browser sessions)
Purpose: Stores your selected role and recently viewed pages
Data Structure:

{
  "state": {
    "role": "marine",
    "recents": [
      {
        "href": "/marines/policies/separation",
        "title": "Separation Procedures",
        "viewedAt": 1717331820000
      },
      {
        "href": "/marines/knowledge/leave",
        "title": "Leave Entitlement",
        "viewedAt": 1717331715000
      }
    ]
  },
  "version": 0
}

Retention: Persists indefinitely until you clear browser data or explicitly delete it.
Size: Typically 1-5 KB.
Shared With: Only your local browser. Not transmitted to servers.

Terms Acceptance Flag

Key: semper-admin-terms-agreed
Type: localStorage (persists across browser sessions)
Purpose: Tracks that you have reviewed and accepted the terms on first visit
Data: String value "true" when set, absent when not set
Retention: Persists indefinitely until you clear browser data.
Size: Bytes.
Effect: If this key is set, the terms modal will not appear on subsequent visits.

Disclaimer Dismissal Flag

Key: sap.disclaimer.dismissed
Type: sessionStorage (cleared when you close the browser tab)
Purpose: Allows you to dismiss the proof-of-concept banner at the top of the page without re-dismissing it every navigation
Data: String value "1" when set, absent when not set
Retention: Clears when you close the browser tab or window.
Size: Bytes.
Effect: Once dismissed, the banner remains hidden for the duration of your tab session.

How to Inspect Your Storage

Chrome, Edge, or Brave

1. Press F12 to open Developer Tools.
2. Click the Application tab.
3. In the left sidebar, expand Local Storage and select this site (semperadmin.github.io).
4. You will see all keys and values as a table.
5. Click on any key to view its full value in the panel below.

Firefox

1. Press F12 to open Developer Tools.
2. Click the Storage tab.
3. In the left sidebar, expand Local Storage and click this site's URL.
4. You will see all keys and values as a table.

Safari

1. Press Cmd+Option+I to open Developer Tools.
2. Click the Storage tab.
3. In the left sidebar, click Local Storage and select this site.
4. You will see all keys and values.

How to Delete Your Storage

Clear All Data at Once

Chrome, Edge, Brave:

1. Press Ctrl+Shift+Delete (Windows/Linux) or Cmd+Shift+Delete (Mac).
2. Select All time or your desired time range.
3. Check Cookies and other site data.
4. Click Clear data.

Firefox:

1. Press Ctrl+Shift+Delete (Windows/Linux) or Cmd+Shift+Delete (Mac).
2. Select Everything or your desired time range.
3. Click Clear Now.

Safari:

1. Click Safari menu.
2. Select Clear History....
3. Set Remove all history items from to your desired time range.
4. Click Clear History.

Delete a Specific Site's Data

Chrome, Edge, Brave:

1. Press F12 to open Developer Tools.
2. Click Application.
3. Expand Local Storage.
4. Right-click on this site's URL and select Clear or Delete.

Firefox:

1. Press F12 to open Developer Tools.
2. Click Storage.
3. Expand Local Storage.
4. Right-click on this site's URL and select Delete.

Delete a Single Key (Advanced)

1. Open Developer Tools as above.
2. Find the key you want to delete in the Local Storage table.
3. Right-click the key and select Delete (Chrome/Edge) or click the key and press Delete (Firefox).

Data Retention Policies

Your Browser's Storage

You control how long data persists in your browser. localStorage items remain until you:

• Manually delete them via Developer Tools.
• Clear your browser's cookies and site data (most browsers have a shortcut: Ctrl+Shift+Delete).
• Clear your browser's cache and browsing data via Settings/Preferences.
• Uninstall your browser.

sessionStorage items automatically clear when you close the browser tab.

GitHub Pages Server Logs

GitHub Pages may retain HTTP access logs (IP address, timestamp, user-agent, referrer) for up to 90 days. These logs are beyond your control. You cannot request deletion of GitHub's server logs directly through this site.

To understand GitHub's data practices, review the GitHub Privacy Statement at https://docs.github.com/en/site-policy/privacy-policies/github-privacy-statement.

Third-Party Cookies

This application does not set cookies. However, GitHub Pages may set cookies related to:

• GitHub's content delivery network (CDN) caching.
• GitHub's analytics or security services.
• Browser security features like Secure, HttpOnly, or SameSite flags.

You do not have control over GitHub's cookies through this site's interface. Manage GitHub's cookies via your browser's global cookie settings.

Disabling Storage

Disable localStorage

Chrome, Edge, Brave:

1. Press Ctrl+Comma to open Settings.
2. Click Privacy and security.
3. Click Site settings or Cookies and site permissions.
4. Click Cookies and data stored.
5. Toggle off Allow sites to save and read cookie data or configure sites to block.

Firefox:

1. Press Ctrl+Comma to open Settings.
2. Click Privacy & Security.
3. Under Cookies and Site Data, select Block all cookies.

Safari:

1. Click Safari menu.
2. Select Settings... or Preferences....
3. Click Privacy.
4. Uncheck Allow from websites I visit under Cookies and website data.

If you disable localStorage, this site will still work, but your role selection will not persist across sessions. You will need to re-select your role every time you visit.

Technical Details

Web Storage API

localStorage and sessionStorage are part of the HTML5 Web Storage API. They allow sites to store up to 5-10 MB of data per site per browser (exact limits vary by browser).

Storage is scoped by origin (protocol, domain, port). Data stored by https://semperadmin.github.io is completely separate from data stored by other sites.

No Encryption

localStorage data is stored in plain text in your browser's profile directory. It is not encrypted by default. If someone gains access to your computer or browser profile, they can read your stored data.

For sensitive work, use a private or incognito browser window. Private mode does not store localStorage data persistently.

No Expiration

Unlike cookies, localStorage items do not have automatic expiration dates. Items persist until explicitly deleted or until you clear your browser data.

Data Minimization

This site applies data minimization principles:

• We store only what is necessary for core functionality (your role selection and recently viewed pages).
• We do not store personal information, account credentials, or identifiable data.
• We do not track your behavior across sites.
• We do not build a profile about you.

Your data serves only to improve your experience on this site. It is never analyzed, mined, or sold.

For more technical details on Web Storage, see the MDN Web Docs article on localStorage and sessionStorage.

For questions about storage or privacy, contact the maintainers via the About page.