Privacy Policy

Last updated: 2026-03-30

This Privacy Policy describes how Driver Sleep Detector (“the App”, “we”, “us”) processes information when you use our Android application published on Google Play. By using the App, you agree to this policy. If you do not agree, please do not use the App.

1. Who we are

The App is published on Google Play. For privacy questions, contact us at the email address in the Contact section below.

2. Summary (what we do and don’t do)

• Camera processing happens on-device for drowsiness detection while monitoring is enabled.
• We do not record or upload video/audio from the camera.
• Purchases are handled by Google Play; we do not receive your full payment card number.
• Depending on your configuration/build, the App may send event logs (e.g., “drowsiness alert occurred”) to a server you operate. This is optional and controlled by the App configuration.

3. Information we process

3.1 Camera and images (sensitive)

The App uses your device’s camera (typically the front camera) to capture live video frames for drowsiness and face detection while you enable monitoring. Frames are processed on your device to estimate whether your eyes are open or closed and to support safety alerts.

• We do not use the camera to record or store video for upload to our servers.
• We do not sell your camera data.
• Detection uses on-device libraries (see Third-party services below). Processing is intended to occur locally on the device; network access may be used by those libraries for updates or related services as described in their policies.

3.2 Device identifiers and basic app info

The App may access or generate certain identifiers and metadata for functionality and (if enabled) logging, such as:

• Device identifier (e.g., Android ID) — used to distinguish devices for logging and troubleshooting when event logging is enabled.
• App version — used to understand which app build produced a log/event.
• Event timestamps — when a detection/alert occurred.

3.3 Permissions and system features

The App may request or use:

• Camera — required for monitoring, as described above.
• Display over other apps / system alert window — to show an optional overlay while you use other apps (e.g. navigation).
• Foreground service — to keep monitoring active reliably while driving.
• Vibration and full-screen intent — to alert you when drowsiness may be detected.
• Internet — used for app functionality that requires network access, including in-app purchases and services that may need connectivity (for example, billing verification or on-device ML components that communicate with Google services as applicable).

3.4 Trial, settings, and app data stored on your device

Information such as trial period timing, daily usage limits, and preferences may be stored locally on your device (for example using Android storage such as SharedPreferences). This data is used only to operate trial limits and your settings and is not transmitted to us by the App for account creation unless you otherwise use a feature that explicitly sends data (we do not operate a login in the App as described here).

3.5 Purchases and payments

Subscriptions and one-time purchases are processed by Google Play (Google LLC or its affiliates). We do not receive your full payment card number. Google provides us with information needed to verify purchase status (for example, subscription state) according to Google’s processes. See Google’s privacy policy for how Google handles payment and account data: Google Privacy Policy.

3.6 Event logs sent to a server (optional)

If you use a build/configuration of the App that has server logging enabled, the App may send event logs to a server endpoint (for example, to store a record that an alert occurred). These logs may include:

• Device identifier (e.g., Android ID)
• Event type (e.g., “DROWSY_ALERT”)
• Event date/time
• App version and selected settings relevant to detection

These logs are intended for operational visibility (e.g., viewing alert history in an admin dashboard). If you operate this server yourself, you are responsible for securing it and providing any additional notices required by your local laws.

4. How we use information

We use the information described above to:

• Provide drowsiness-related detection and alerts;
• Operate trial limits and premium access;
• Maintain, secure, and improve the App;
• Diagnose crashes/bugs and improve reliability;
• Comply with law where required.

5. Sharing and disclosure

We may share information in the following cases:

• With service providers/SDKs (for example, Google Play services components) as required to provide functionality such as billing or on-device ML components.
• With Google Play for purchases and subscription verification.
• For legal reasons if required by applicable law or a valid legal process.

We do not sell personal information.

6. Third-party services

The App may rely on services and SDKs provided by third parties, including:

• Google Play Billing Library — in-app purchases and subscriptions. Google Payments Privacy Notice.
• Google ML Kit / Google Play services — on-device face detection features may use Google’s on-device ML components. Use may be subject to Google’s Privacy Policy and applicable terms for ML Kit.

We do not control third-party services. We encourage you to read their policies. This Privacy Policy does not cover those third parties.

7. Data retention

On-device data (settings, trial timers, preferences) remains until you clear the App’s data or uninstall the App, unless Android backup features apply.

Server logs (if enabled) are retained for as long as the server operator (you/your organization) keeps them. If you are using our provided server logging template, you can delete logs from your database at any time.

8. Data deletion

You can delete on-device data by clearing the App’s storage in Android settings or uninstalling the App.

If server logging is enabled and you want server-side logs deleted, contact us at the email below and include: your approximate dates/times of use and (if available) your device identifier. We will respond with available options. If you operate the logging server yourself, you can delete your own records directly from the database.

9. Security

We design the App to process sensitive inputs on the device where possible. No method of electronic storage or transmission is 100% secure. Use the App at your discretion and keep your device OS updated.

10. Children’s privacy

The App is not intended for children under 13 (or the minimum age required in your country). We do not knowingly collect personal information from children. If you believe we have such information, contact us and we will take appropriate steps.

11. Your rights and choices

Depending on where you live, you may have rights regarding personal data (for example access, correction, deletion, portability, or objection). To exercise rights against Google for data they process in connection with Play or device services, use Google’s tools and policies. To contact us about this App’s practices, use the email below.

You can stop collection of camera data by revoking camera permission in Android settings or by not using monitoring features. You can uninstall the App at any time.

12. International users

If you use the App outside your home country, information may be processed in countries where service providers (such as Google) operate, which may have different data protection laws.

13. Changes to this policy

We may update this Privacy Policy from time to time. We will post the new version on this page and update the “Last updated” date. Continued use of the App after changes means you accept the updated policy where permitted by law.

14. Contact