MTGB PRIVACY POLICY

1. Introduction

MTGB (The Monitor That Goes Bing) is a free, open source Windows 10/11 desktop application that monitors SimplyPrint 3D printers and delivers native Windows toast notifications when print events occur. It is developed and maintained by Myndworx and is licensed under the MIT licence.

This policy explains what data MTGB may collect, under what circumstances, and how that data is used. MTGB is designed with privacy as a default — all data collection is disabled by default and requires explicit opt-in.

2. What MTGB Collects

When you explicitly opt in to anonymous telemetry, MTGB sends one ping per day containing the following:

2.1 Installation Identity

• A randomly generated anonymous install ID — a GUID created on first run, stored locally, and never tied to a person, account, or organisation
• MTGB version number
• Windows version and build number

2.2 Usage Data

• Number of printers connected — count only, no names
• Printer integration type — e.g. "Bambu", "Prusa"
• Printer model brand and name — e.g. "Bambu Lab X1C"
• Which notification event types are enabled — event IDs only, no content
• Whether notification grouping is enabled
• Whether webhooks are enabled
• Whether quiet hours are enabled
• Whether notification sound is enabled
• Poll success and failure counts since last ping
• Toast delivery success and failure counts since last ping

2.3 Community Map

If you separately opt in to the community map, MTGB records:

• Your country — e.g. "Australia"
• Your state or territory where applicable — e.g. "Victoria"
• Country only for countries without a state/territory system
• Your anonymous install ID — to allow opt-out and removal

The community map never records city, suburb, postcode, street address, or any location more precise than state or territory level. This resolution is fixed and will never be made more precise.

3. What MTGB Never Collects

The following are never collected, never transmitted, never stored, and never will be under any circumstances:

• SimplyPrint API keys or authentication tokens
• SimplyPrint organisation IDs
• Printer names
• Print job filenames or print content
• Job history or notification content
• IP addresses
• Email addresses
• Names or any personally identifying information
• Payment information of any kind
• Location data more precise than state or territory level
• Any data from users who have not explicitly opted in

4. Anonymous Telemetry

Anonymous telemetry is disabled by default. It is presented as an opt-in choice during the MTGB Induction wizard and can be toggled at any time via Settings → Privacy.

When enabled, MTGB sends one telemetry ping per day to community.myndworx.com. The server enforces a minimum 23-hour interval between pings from any single installation. Pings that arrive too soon are acknowledged and discarded without being stored.

Telemetry data is used exclusively to understand how MTGB is being used across the community — which features are popular, which printer types are most common, and whether the software is functioning reliably. It is never used for advertising, never sold, and never shared with third parties.

5. Community Map

The community map is a completely separate opt-in from telemetry. It is presented during the MTGB Induction wizard and can be managed at any time via Settings → Privacy.

The community map shows where in the world MTGB is being used, at state or territory level. Participation is entirely voluntary. Enabling or disabling telemetry has no effect on community map registration, and vice versa.

Community map registrations are stored in the community.myndworx.com database. Each registration consists of a country, an optional state or territory, a display name derived from those values, and the anonymous install ID. No other data is stored.

5.1 Removal

To remove your registration from the community map, navigate to Settings → Privacy → Community Map → Remove my dot. Your record is deleted from the database immediately. The status indicator in Settings will confirm removal.

6. The Install ID

The anonymous install ID is a randomly generated GUID — a 128-bit number generated by your computer using a cryptographically secure random number generator on first run. It is stored in MTGB's local settings file at %APPDATA%\MTGB\appsettings.json.

The install ID has no relationship to your Windows user account, your SimplyPrint account, your hardware, your IP address, or any other identifying information. It exists solely to allow the server to recognise when a daily ping comes from a previously seen installation, and to allow removal of a community map registration on request.

If MTGB is uninstalled and reinstalled, a new install ID is generated. The previous install ID is no longer transmitted.

7. Where Data Is Stored

Telemetry and community map data is transmitted to and stored on servers operated by Myndworx at community.myndworx.com. This server runs Apache2 and MariaDB on Ubuntu Linux and is secured with SSL/TLS via Let's Encrypt.

Local application data — settings, notification history, and the install ID — is stored on your computer at %APPDATA%\MTGB\. This data never leaves your machine except as part of the telemetry or community map systems described above, and only when you have opted in to those systems.

Credentials — your SimplyPrint API key and any OAuth2 tokens — are stored in the Windows Credential Manager. They are encrypted by Windows, scoped to your Windows user account, and never transmitted to any Myndworx server.

8. Opting Out

8.1 Telemetry

Navigate to Settings → Privacy → Anonymous telemetry → toggle off. Takes effect immediately. The next scheduled ping will not fire. No confirmation is required and no data is deleted from the server as a result — historical anonymous pings already received are retained in aggregated form.

8.2 Community Map

Navigate to Settings → Privacy → Community Map → Remove my dot. Your registration record is deleted from the database immediately. The status indicator confirms removal.

8.3 Both at Once

Turn off the telemetry toggle and click Remove my dot in Settings → Privacy. Both are handled independently and immediately.

8.4 During Induction

If you exit the MTGB Induction wizard without completing it, no data is ever transmitted. Any selections made during the wizard are discarded and the installation is treated as if the Induction never occurred.

9. Data Retention

• Anonymous telemetry pings: Retained indefinitely in anonymous aggregated form. No personal data is retained.
• Community map registrations: Retained until the user opts out via Settings → Privacy. Deleted immediately on opt-out.
• Local notification history: Stored on your machine, capped at 1000 entries, never transmitted to Myndworx servers.
• Local settings and install ID: Stored on your machine, removed when MTGB is uninstalled.
• Windows Credential Manager entries: Stored on your machine, scoped to your Windows account, removed when MTGB is uninstalled or when you disconnect your account via Settings → Account.

10. Your Data Rights

Because MTGB collects only anonymous data and no personal information, most standard data rights — such as the right to access, correct, or port personal data — do not apply in the traditional sense, as there is no personal data to access, correct, or transfer.

The rights that do apply are:

Right to Erasure (Community Map)

You may remove your community map registration at any time via Settings → Privacy. Deletion is immediate and complete.

Right to Withdraw Consent (Telemetry)

You may disable telemetry at any time via Settings → Privacy. This takes effect immediately.

Right to Know

This policy and the MTGB source code constitute full disclosure of what is collected. There are no undisclosed data streams.

If you have questions or concerns about your data, contact us at info@myndworx.com with the subject line "MTGB Privacy Inquiry".

11. Children's Privacy

MTGB is not directed to children under 16 years of age. As MTGB collects no personal information and all telemetry is anonymous and opt-in, there is no meaningful risk of collecting children's personal data. However, if you are a parent or guardian with concerns, please contact us at info@myndworx.com.

12. Policy Changes

We may update this Privacy Policy when MTGB adds new features that affect data collection. Changes will be posted on this page with an updated Last Updated date. Significant changes will also be noted in the MTGB changelog at github.com/Rayvenhaus/mtgb.

Continued use of MTGB after a policy change constitutes acceptance of the updated policy. As all data collection is opt-in, you may also simply opt out of all data collection if you do not accept the updated terms.

13. Contact Information

If you have questions about this Privacy Policy or the MTGB application's data practices, please contact us:

We will respond to all legitimate requests within 30 days.

For the full technical details of MTGB's telemetry system, see TELEMETRY.md in the repository.