Introduction & Overview
Welcome to Online Bingo Cards (onlinebingocards.com). This Privacy Policy explains our practices regarding the collection, use, processing, and protection of information when you access our bingo generator, printable templates, and digital multiplayer arena.
By using our website, you acknowledge that OnlineBingoCards.com operates under a strict privacy-by-design model. We deliberately minimize data collection and prioritize local browser computation so that you maintain complete sovereignty over your content.
Client-Side Architecture & Data Isolation
Unlike traditional web applications that upload your inputs to cloud databases for processing, OnlineBingoCards.com executes core workflows entirely inside your local browser runtime:
- Card Permutations: Fisher-Yates card shuffling, uniqueness verification algorithms, and subset generation run locally via web workers without network requests.
- PDF Vector Compilation: When you click "Download PDF", your documents are assembled inside your browser using client-side vector engines (pdf-lib). The resulting binary file streams directly to your local file system.
- Custom Images & Visual Picture Bingo: Pictures, logos, or icons you upload to design picture cards are stored in your device's browser database (IndexedDB) and are never transmitted to our remote servers.
Information We Do NOT Collect
To provide the most trusted experience possible, we affirmatively avoid collecting:
Live Multiplayer & Ephemeral Session Data
When you create or join an online game room through our Play Hub (/play/), our edge coordination service manages real-time interactions via WebSockets:
- Temporary Room Codes: Game rooms utilize temporary 4-to-6 character alphanumeric codes stored only in volatile server memory.
- Anonymous Player Handles: Players choose a temporary nickname to join the board. No identity verification or contact information is requested.
- Automated Purging: Once a game concludes or the room experiences inactivity for 60 minutes, the room state, call history, and player handles are permanently expunged from volatile memory.
Local Storage & Cookie Policy
We do not use tracking or advertising cookies. We only use essential local browser storage capabilities:
| Storage Key | Type | Purpose | Duration |
|---|---|---|---|
| obc_theme | localStorage | Remembers your dark mode / light mode preference. | Persistent until cleared |
| obc_sound_muted | localStorage | Remembers sound mute / unmute state for game audio. | Persistent until cleared |
| obc_draft_project | localStorage | Prevents losing your work if your browser reloads. | Persistent until cleared |
You can clear all stored data at any time through your browser's "Clear Site Data" or "Clear Cookies and Site Data" settings.
Children's Privacy (COPPA & FERPA Compliance)
OnlineBingoCards.com is widely utilized by elementary schools, educators, and after-school programs. Because we do not require registration, do not collect personal names, and do not track individual children, our service complies with:
- COPPA (Children's Online Privacy Protection Act): We do not knowingly collect, solicit, or maintain personal information from children under 13.
- FERPA (Family Educational Rights and Privacy Act): Any student data entered into cards is processed client-side by the educator and never enters our corporate databases.
Your Rights Under GDPR, UK GDPR & CCPA/CPRA
Depending on your jurisdiction, you may have specific privacy rights regarding personal data:
- Right to Access & Portability: Since we do not maintain accounts or identifiable user records, your project data is entirely stored in your browser. You can export it as PDF or shareable hash URLs at any time.
- Right to Erasure (Right to be Forgotten): You can erase all site state instantly by clearing your browser storage.
- Right to Non-Discrimination: We do not sell personal data, gate features behind data collection, or alter service quality based on privacy preferences.
Contact Our Privacy Team
If you have questions, feedback, or concerns regarding our privacy principles or this policy, please reach out to us: