Privacy Policy - Bluetooth-USB Thermal Printer Plus

Last Updated: July 23, 2026

1. Introduction

Welcome to Bluetooth-USB Thermal Printer Plus. This mobile application is owned and operated by Techpuram Technology Private Limited ("we," "us," "our," or "the Company"), a private limited company registered in India.

We are committed to protecting your privacy and ensuring transparency about how we collect, use, and share information when you use our mobile application ("the App").

This Privacy Policy explains:

• What information we collect and why
• How we use and share your information
• Your rights and choices regarding your information
• How we protect your information
• How to contact us with questions or concerns

By using Bluetooth-USB Thermal Printer Plus, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use our App.

2. Information We Collect

2.1 Information You Provide Directly

We collect information that you voluntarily provide when using certain features of the App:

AI Generation Features

• Text Prompts: When you use AI-powered template or list generation features, the text prompts you enter are sent to our AI service provider (OpenRouter) for processing
• Generated Content: The AI-generated templates, lists, and outputs you create
• User Preferences: Your AI feature settings and preferences

OCR (Text Recognition) Features

• Images: Images you provide for text extraction are processed locally on your device using Google ML Kit
• Note: OCR processing is performed entirely on-device and images are not transmitted to external servers

Print Content

• Templates: Print templates you create and save
• Placeholders: Custom placeholder data you define
• Print History: Records of your print operations (stored locally)

2.2 Information Collected Automatically

When you use our App, we automatically collect certain information:

Device Information

• Device model and manufacturer
• Operating system version (Android version)
• Unique device identifiers (Advertising ID, Android ID)
• Device screen size and resolution
• Device language and region settings
• Network information (WiFi/mobile data status)

App Usage Information

We collect detailed information about how you interact with our App features:

• AI Generation: Requests made, success/failure rates, models used, credits consumed
• OCR Operations: Text extraction attempts, processing time, text length
• Image Editing: Crop operations, canvas editor usage, stickers added, templates applied, undo/redo actions
• Printing Activities: Print job success/failure, Bluetooth connection events, printer type used, dithering algorithms selected
• QR/Barcode Generation: Code types generated, sizes selected, generation frequency
• Device Management: Bluetooth device pairing/unpairing, connection success/failure
• App Settings: Language preferences, theme changes, feature toggles, dithering preferences
• Navigation: Screens viewed, time spent on each screen, feature discovery patterns
• Performance: App launch time, feature load times, crash reports

Log Data

• App configuration and version
• Date and time of app usage
• Error logs and crash reports
• Performance metrics

Advertising Data

• Advertising ID (for personalized ads)
• Ad impressions and interactions
• Ad performance metrics

2.3 Location Information

We do NOT collect location data. While the App requires Bluetooth permissions that historically required location access on older Android versions (Android 6-11), we use the neverForLocation flag on Android 12+ to explicitly indicate that Bluetooth is used only for printer connectivity, not for location tracking.

2.4 Data Stored Locally on Your Device

The following data is stored locally on your device and is not transmitted to our servers:

• Activity Logs: Records of print operations, app events, and errors
• Print Templates: Saved templates and content you create
• App Settings: Your preferences, settings, and configuration choices
• Cached Data: AI service configuration, temporary files
• Placeholder Data: Custom placeholder definitions you create

This local data is stored using Android Room Database and SharedPreferences. You can clear this data at any time through Android Settings > Apps > Bluetooth-USB Thermal Printer Plus > Clear Data.

2.5 Print Bridge (Print From Anywhere / Automatic Order Printing)

Print Bridge is an optional feature that relays print jobs from a browser, your own order system, or an AI agent to this app over the internet, so the phone can print a job even while the app isn't open. Unlike the rest of the app, using Print Bridge means some data is processed on our server (printbridge.bluetoothprinter.in), not only on your device. This section explains exactly what.

Quick Print (no account)

• 12-digit code: A temporary code generated by the app to identify this phone for a single session
• Print content: The text or image you send is held only long enough to deliver it to your phone and confirm it printed
• Session data: Automatically deleted when the app's Print Bridge screen is closed, or by an automatic daily cleanup after 5 days at the latest
• No account, email, or sign-in is involved in this flow

Signed-in account (for remembered devices and automatic printing)

• Account identity: Signing in uses Firebase Authentication (Google Sign-In or an emailed magic link) - we receive your email address and a unique account ID from Firebase/Google; we never see or store a password
• API key: Issued to your account to authenticate print requests from your own order system, automation tool (e.g. n8n, Zapier), or an MCP-connected AI agent; stored only as a one-way (bcrypt) hash - we cannot recover your raw key ourselves
• Paired device data: A device name, a device-scoped authentication token, and - if automatic order printing is enabled - a Firebase Cloud Messaging (FCM) push token, so a print job can be delivered to that specific phone
• Print job content and history: Order details or text/image content you or your connected system submit is stored only long enough to deliver and confirm printing, then removed on routine cleanup; job status (queued/sent/printed/failed) is kept as a short history so you can review it on the dashboard

Full details - including exactly how long each of these is retained and how to request deletion - are in the Print Bridge Privacy Policy, which this section summarizes.

3. How We Use Your Information

We use the information we collect for the following purposes:

3.1 App Functionality

• Provide core printing functionality via Bluetooth
• Process AI generation requests for templates and lists
• Perform OCR text extraction from images
• Enable image editing and canvas features
• Generate QR codes and barcodes
• Save and manage print templates
• Manage Bluetooth device connections
• Authenticate your Print Bridge account and deliver print jobs to the correct paired phone (via push notification or a live session for Quick Print)

3.2 App Improvement and Analytics

• Analyze usage patterns to understand which features are most valuable
• Identify and fix bugs, crashes, and technical issues
• Optimize app performance and user experience
• Develop new features based on user behavior
• Conduct A/B testing for feature improvements

3.3 Advertising

• Display relevant advertisements through our ad partners
• Measure ad performance and effectiveness
• Provide personalized advertising based on your interests (with your consent)

3.4 Communication

• Send important app updates and notifications
• Respond to your support requests and inquiries
• Request app reviews and feedback

3.5 Legal and Security

• Comply with legal obligations and regulations
• Protect against fraud and abuse
• Enforce our Terms of Service
• Protect the rights and safety of our users

4. Third-Party Services and Data Sharing

We work with third-party service providers to deliver app functionality, advertising, and analytics. These services may collect and process your information according to their own privacy policies.

4.1 Advertising Partners - Detailed Information

Google AdMob

We use Google AdMob to display advertisements in our app. AdMob may collect and use the following information:

• Device advertising identifier (Google Advertising ID)
• IP address (for general location, not precise location)
• Device information (model, OS version, screen size)
• App usage data and ad interactions

Learn more: How Google uses data in AdMob

Meta Audience Network (Facebook)

We use Meta Audience Network for advertising mediation and to show ads from Meta's ad network. Meta may collect:

• Device identifiers (Android Advertising ID)
• Device and network information
• App interaction data
• Ad performance metrics

Learn more: Meta Privacy Policy

4.2 Analytics Partners

Firebase Analytics & Google Analytics

We use both Firebase Analytics and Google Analytics to understand how users interact with our app. These services collect:

• App usage events and feature interactions
• Device characteristics and configuration
• App performance data
• User engagement metrics

Firebase and Google Analytics data is retained according to Google's data retention policies (typically 2-14 months for event data).

4.3 AI Service Provider

OpenRouter

When you use AI generation features (template generation, list creation), your text prompts are sent to OpenRouter for processing using AI models. OpenRouter may:

• Process your prompts using various AI models
• Store prompts temporarily for processing
• Use data for service improvement (according to their policy)

Important: Do not include personal, sensitive, or confidential information in AI prompts.

Review OpenRouter's data practices: OpenRouter Privacy Policy

4.4 On-Device Processing (No Data Sharing)

The following features process data entirely on your device without sending data to external servers:

• Google ML Kit OCR: Text recognition from images is performed on-device
• ZXing: QR code and barcode generation is done locally
• Glide: Image loading and caching is local
• OpenCSV: CSV file operations are processed locally
• Bluetooth Communication: When printing directly from the app (not via Print Bridge), print data is sent directly to your printer, not to our servers

4.5 Print Bridge Infrastructure and Your Own Integrations

If you use Print Bridge, the following additionally applies:

• Firebase Authentication & Cloud Messaging (Google): Used to sign you in and to push print jobs to your paired phone - see the table above for the Firebase Privacy link
• Your own connected services: If you connect Print Bridge to your own order source, automation tool (e.g. n8n, Zapier), or an MCP-enabled AI agent (e.g. Claude Code, Claude Desktop, Cursor) using your API key, order/print content flows through whichever service you configured - that service's own privacy practices apply to data it holds, since we don't control tools you choose to connect

4.6 Data Sharing Summary

We share your data with the following categories of third parties:

• Advertising Networks: Google AdMob, Meta Audience Network
• Analytics Providers: Firebase Analytics, Google Analytics
• AI Service Providers: OpenRouter
• Payment Processors: Google Play Billing
• Infrastructure Providers: Firebase (Google Cloud) - including Authentication and Cloud Messaging for Print Bridge
• Your Own Integrations (Print Bridge only, if you set them up): any order source, automation tool, or MCP-connected AI agent you personally connect with your API key

5. Advertising and Your Choices

5.1 Personalized Advertising

We display personalized advertisements based on your interests and app usage. This helps us keep the app free while providing relevant ads.

5.2 Consent Management

We use Google User Messaging Platform (UMP) to manage your consent for personalized advertising in compliance with GDPR (Europe) and CCPA (California) regulations. When you first launch the app, you'll see a consent dialog where you can:

• Consent to personalized ads
• Choose non-personalized ads only
• Learn about our partners and their data practices

5.3 How to Opt Out of Personalized Ads

You can opt out of personalized advertising at any time:

On Android:

1. Open your device Settings
2. Go to Google > Ads
3. Enable "Opt out of Ads Personalization"

Online:

• Visit Google Ads Settings
• Visit Facebook Ad Preferences

Note: Opting out means you'll still see ads, but they won't be personalized based on your interests.

6. Data Security and Encryption

6.1 Encryption in Transit

All data transmitted between your device and our servers or third-party services is encrypted using industry-standard protocols:

• HTTPS/TLS: All network communications use TLS 1.2 or higher
• Secure Connections: Data sent to OpenRouter, Firebase, ad networks, and analytics services is encrypted

6.2 Data at Rest

• Local data on your device is protected by Android's built-in security
• Remote data stored in Firebase is protected by Google's security infrastructure

6.3 Security Measures

We implement appropriate technical and organizational measures to protect your information:

• Regular security assessments
• Secure API authentication
• Limited access to user data
• Prompt security patch updates

7. Data Retention

We retain different types of data for varying periods:

Account Deletion: Most of the app doesn't require an account, and uninstalling it removes all locally stored data immediately. If you've signed in to Print Bridge, that creates a real account on our server, which is not removed by uninstalling the app - revoke paired devices and request deletion any time from the Print Bridge dashboard or by emailing techpuramtechnology@gmail.com. To request deletion of data held by other third parties, please contact us and we will assist you.

8. Your Rights and Choices

8.1 Access and Control

Depending on your location, you may have certain rights regarding your personal information:

Right to Access

• Request information about what data we collect
• Obtain a copy of your data

Right to Deletion

• Request deletion of your data (where applicable)
• Clear local data through Android Settings

Right to Correction

• Request correction of inaccurate data
• Update your preferences and settings

Right to Object

• Opt out of personalized advertising
• Disable analytics (may limit app functionality)

Right to Data Portability

• Request your data in a structured, machine-readable format

Right to Withdraw Consent

• Change your advertising consent preferences
• Stop using AI features that send data to OpenRouter

8.2 How to Exercise Your Rights

To exercise any of these rights:

1. Contact us at the email address provided below
2. Provide your device information and specific request
3. We will respond within 30 days

8.3 Data Clearing Options

• Clear Local Data: Android Settings > Apps > Bluetooth-USB Thermal Printer Plus > Clear Data
• Clear Cache: Android Settings > Apps > Bluetooth-USB Thermal Printer Plus > Clear Cache
• Reset Advertising ID: Android Settings > Google > Ads > Reset Advertising ID
• Uninstall App: Removes all local data immediately (does not delete a Print Bridge account - see below)
• Revoke a Print Bridge Device: Sign in to the Print Bridge dashboard and revoke it - it stops receiving jobs immediately
• Regenerate Print Bridge API Key: Available any time from the dashboard - the previous key stops working immediately
• Delete Print Bridge Account: Email techpuramtechnology@gmail.com to request full account deletion

9. Children's Privacy

Our app is not intended for children under 13 years of age (or the applicable age of digital consent in your jurisdiction). We do not knowingly collect personal information from children under 13.

If you are a parent or guardian and believe your child has provided personal information to us, please contact us immediately. We will take steps to delete such information from our systems.

10. International Data Transfers

Your information may be transferred to and processed in countries other than your own, including:

• United States: Where many of our service providers (Google, Firebase, OpenRouter) operate
• European Union: Where some servers may be located

These countries may have different data protection laws than your jurisdiction. However, we ensure that appropriate safeguards are in place, including:

• Standard Contractual Clauses approved by regulatory authorities
• Compliance with Privacy Shield frameworks (where applicable)
• Service provider certifications (ISO 27001, SOC 2, etc.)

11. California Privacy Rights (CCPA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):

Categories of Personal Information We Collect

• Identifiers: Device IDs, advertising IDs
• Internet Activity: App usage, feature interactions
• Device Information: Device model, OS version
• Inferences: User preferences derived from app usage

Your California Rights

• Right to Know: Request details about data collection and sharing
• Right to Delete: Request deletion of your personal information
• Right to Opt-Out: Opt out of the "sale" of personal information (Note: Techpuram Technology Private Limited does not sell personal information)
• Right to Non-Discrimination: We won't discriminate against you for exercising your rights

To exercise these rights, contact us using the information provided below.

12. European Privacy Rights (GDPR)

If you are in the European Economic Area (EEA), United Kingdom, or Switzerland, you have rights under the General Data Protection Regulation (GDPR):

Legal Basis for Processing

• Consent: For personalized advertising (you can withdraw at any time)
• Legitimate Interest: For analytics and app improvement
• Contract Performance: For providing app functionality
• Legal Obligation: For compliance with laws

Your GDPR Rights

• Right to access your personal data
• Right to rectification of inaccurate data
• Right to erasure ("right to be forgotten")
• Right to restrict processing
• Right to data portability
• Right to object to processing
• Right to withdraw consent
• Right to lodge a complaint with a supervisory authority

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in:

• Our data practices
• App features and functionality
• Legal or regulatory requirements
• Third-party service providers

Notice of Changes:

• We will update the "Last Updated" date at the top of this policy
• Material changes will be communicated through the app or via notification
• Continued use of the app after changes constitutes acceptance of the updated policy

We encourage you to review this Privacy Policy periodically to stay informed about how we protect your information.

14. Third-Party Links and Services

Our app may contain links to external websites or third-party services not operated by us. We are not responsible for the privacy practices of these external sites. We encourage you to review the privacy policies of any third-party services you access through our app.

15. Contact Us

16. Additional Resources

Learn more about privacy and your choices:

• Google Privacy & Terms
• Meta Privacy Center
• Network Advertising Initiative Opt-Out
• Your Online Choices (EU)
• FTC Children's Privacy

Summary of Key Points

© 2026 Techpuram Technology Private Limited. All rights reserved.
Bluetooth-USB Thermal Printer Plus is a product of Techpuram Technology Private Limited.