Cookie Policy

This Cookie Policy explains how Vivekananda Blood Bank uses cookies and similar tracking technologies on our website. This policy should be read together with our Privacy Policy and Terms and Conditions.

1. What Are Cookies?

Definition

Cookies are small text files that are placed on your computer, smartphone, or other device when you visit a website. They are widely used to make websites work more efficiently and provide information to website owners.

How Cookies Work

• When you visit our website, cookies are stored on your device
• These cookies contain information such as user preferences or session data
• When you revisit, your browser sends these cookies back to us
• This allows us to recognize your device and remember your preferences

Session vs Persistent Cookies

Session Cookies: Temporary cookies that expire when you close your browser. Used for essential functions like maintaining login status.

Persistent Cookies: Remain on your device for a set period or until deleted. Remember your preferences for future visits.

2. Why We Use Cookies

We use cookies for several important purposes:

Essential Functionality

• Authentication: Keep you logged in to your donor account
• Security: Protect against fraud and unauthorized access
• Session Management: Maintain your session as you navigate
• Form Submission: Remember information you've entered

Performance and Analytics

• Usage Statistics: Understand how visitors use our Service
• Performance Monitoring: Identify and fix technical issues
• User Experience: Improve navigation and functionality

Personalization

• Language Preferences: Remember your language choice
• Location Settings: Remember your selected location
• Notification Preferences: Store your notification settings

3. Types of Cookies We Use

3.1 Strictly Necessary Cookies

Purpose: Essential for the website to function properly.

Examples:

• session_id - Maintains your login session
• csrf_token - Protects against security attacks
• cookie_consent - Remembers your cookie preferences

3.2 Functional Cookies

Purpose: Enable enhanced functionality and personalization.

Examples:

• language_pref - Your selected language
• location_data - Your saved location
• notification_consent - Notification permission status

Can You Disable Them? Yes, but functionality may be reduced.

3.3 Analytics Cookies

Purpose: Collect information about how visitors use our Service.

Examples:

• _ga - Google Analytics user identifier
• _gid - Google Analytics session identifier

Can You Disable Them? Yes. Data is aggregated and anonymized.

3.4 Notification Cookies

Purpose: Enable web push notifications.

Examples:

• onesignal_player_id - OneSignal subscriber identifier
• notification_prompt_shown - Whether you've seen the prompt

4. Specific Cookies Used

Essential Cookies

Cookie Name	Purpose	Duration
PHPSESSID	PHP session identifier for login state	Until browser closes
donor_code	Encrypted donor code for authentication	Until browser closes
csrf_token	Security token to prevent CSRF attacks	1 hour
cookie_consent	Stores your cookie consent preferences	1 year

Functional Cookies

Cookie Name	Purpose	Duration
language_pref	Remembers language selection	1 year
location_division	Stores selected division	6 months
notification_consent	Tracks notification permission	1 year

Third-Party Cookies

Cookie Name	Provider	Purpose	Duration
_GRECAPTCHA	Google reCAPTCHA	Bot detection and spam prevention	6 months
onesignal_player_id	OneSignal	Push notification subscriber ID	2 years
_ga	Google Analytics	User identifier	2 years

5. How to Manage Cookies

Browser Settings

Most web browsers allow you to manage cookies through settings:

Google Chrome

1. Click the three-dot menu > Settings
2. Privacy and security > Cookies and other site data
3. Choose your preference (Allow all / Block third-party / Block all)

Mozilla Firefox

1. Click the menu button > Settings
2. Privacy & Security > Cookies and Site Data
3. Choose your preference (Standard / Strict / Custom)

Microsoft Edge

1. Click the three-dot menu > Settings
2. Cookies and site permissions > Cookies and site data
3. Manage and delete cookies as needed

Safari (Mac)

1. Safari menu > Preferences > Privacy
2. Choose cookie blocking level
3. Manage Website Data to view and remove cookies

Impact of Disabling Cookies

Third-Party Opt-Out

Google Services:

• Google Analytics: Opt-out browser add-on
• Google Ads: Ad settings

OneSignal:

• Disable notifications through browser settings
• Uncheck "Willingness to Donate" in your profile

6. Other Tracking Technologies

Web Beacons (Pixels)

Small, invisible images embedded in web pages or emails to track page views and email open rates.

Local Storage

Browser storage mechanism (HTML5 Local Storage) that stores data locally on your device with larger capacity than cookies.

Push Notification Tokens

Unique identifiers assigned to your device/browser for push notifications:

• OneSignal Player ID (web)

7. Updates to This Policy

We may update this Cookie Policy from time to time to reflect changes in our use of cookies or applicable laws.

How We Notify You

• The "Last Updated" date will be revised
• Email notification to registered users for significant changes
• Prominent notice on the website
• Updated cookie consent banner

8. Contact Us

Questions About Cookies

If you have questions about our use of cookies:

• Email: support@vsspbd.org (example)
• Phone: +880-XXX-XXXXXX (example)
• Website: https://vsspbd.org

We aim to respond to all inquiries within 7 business days.

Additional Resources

Learn More About Cookies

• All About Cookies
• European Union Cookie Guide

Related Policies

Please also review:

• Privacy Policy - How we collect, use, and protect your data
• Terms and Conditions - Rules for using our Service

Summary

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Vivekananda Blood Bank
An initiative of Vivekananda Shiksha O Sangskriti Parishad, Bangladesh
https://vsspbd.org

This Cookie Policy was last updated on January 11, 2026 • Version 1.0