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Privacy Policy

Last updated October 29, 2026

Device-local checklist recovery

Your checklist answers and private cryptographic keys are saved in local browser storage on your own device. They are never sent in plaintext to our server. This lets you switch apps, close the tab, or reload and resume in the same browser. Anyone with access to that browser, and scripts running on this site, may access this storage; avoid shared devices.

Local session data is cleared when the session completes, when you choose “End & wipe local session,” or on the next load after the 24-hour expiry or detection that the server session has ended. An incompatible result remains active while you decide whether to request a mutual reveal. We cannot delete local data while the site is closed. Server sessions remain in temporary memory, so server restarts can still prevent recovery. No email address is requested for partner notifications. Optional feedback text is recorded in server logs; do not include identifying information or private answers.

Blind Flag is a product/service provided by Valence Insights LLC. This Privacy Notice for BlindFlag ("we," "us," or "our"), describes how and why we might access, collect, store, use, and/or share ("process") your personal information when you use our services ("Services"), including when you:

Questions or concerns? Reading this Privacy Notice will help you understand your privacy rights and choices. We are responsible for making decisions about how your personal information is processed. If you do not agree with our policies and practices, please do not use our Services. If you still have any questions or concerns, please contact us at support@blindflag.com.

1. WHAT INFORMATION DO WE COLLECT?

Personal information you disclose to us In Short: We collect personal information that you provide to us.

We collect personal information that you voluntarily provide to us when you express an interest in obtaining information about us or our products and Services, when you participate in activities on the Services, or otherwise when you contact us.

Personal Information Provided by You. The personal information that we collect depends on the context of your interactions with us and the Services, the choices you make, and the products and features you use. The personal information we collect may include the following:

Sensitive Information. When necessary, with your consent or as otherwise permitted by applicable law, we process the following categories of sensitive information:

Payment Data. We may collect data necessary to process your payment if you choose to make purchases, such as your payment instrument number, and the security code associated with your payment instrument. All payment data is handled and stored by Stripe. You may find their privacy notice link(s) here: https://stripe.com/privacy.

All personal information that you provide to us must be true, complete, and accurate, and you must notify us of any changes to such personal information.

Information automatically collected In Short: Some information, such as your Internet Protocol (IP) address and/or browser and device characteristics, is collected automatically when you visit our Services.

We automatically collect certain information when you visit, use, or navigate the Services. This information does not reveal your specific identity (like your name or contact information) but may include device and usage information, such as your IP address, browser and device characteristics, operating system, language preferences, referring URLs, device name, country, location, information about how and when you use our Services, and other technical information. This information is primarily needed to maintain the security and operation of our Services, and for our internal analytics and reporting purposes.

2. HOW DO WE PROCESS YOUR INFORMATION?

In Short: We process your information to provide, improve, and administer our Services, communicate with you, for security and fraud prevention, and to comply with law. We may also process your information for other purposes with your consent.

We process your personal information for a variety of reasons, depending on how you interact with our Services, including:

3. WHEN AND WITH WHOM DO WE SHARE YOUR PERSONAL INFORMATION?

In Short: We may share information in specific situations described in this section and/or with the following third parties.

We may need to share your personal information in the following situations:

4. HOW LONG DO WE KEEP YOUR INFORMATION?

In Short: We keep your information for as long as necessary to fulfill the purposes outlined in this Privacy Notice unless otherwise required by law.

We will only keep your personal information for as long as it is necessary for the purposes set out in this Privacy Notice, unless a longer retention period is required or permitted by law (such as tax, accounting, or other legal requirements). No purpose in this notice will require us keeping your personal information for longer than: Questionnaire session data is stored for a maximum duration of 24 hours, or until one or both users of a pin press a button to delete the data, or until the server is refreshed; whichever is soonest. However, basic administrative, payment processing, and server log data may be retained for longer periods as necessary to comply with legal, tax, or security obligations.

When we have no ongoing legitimate business need to process your personal information, we will either delete or anonymize such information, or, if this is not possible (for example, because your personal information has been stored in backup archives), then we will securely store your personal information and isolate it from any further processing until deletion is possible.

5. HOW DO WE KEEP YOUR INFORMATION SAFE?

In Short: We aim to protect your personal information through a system of organizational and technical security measures.

We have implemented appropriate and reasonable technical and organizational security measures designed to protect the security of any personal information we process. However, despite our safeguards and efforts to secure your information, no electronic transmission over the Internet or information storage technology can be guaranteed to be 100% secure, so we cannot promise or guarantee that hackers, cybercriminals, or other unauthorized third parties will not be able to defeat our security and improperly collect, access, steal, or modify your information. Although we will do our best to protect your personal information, transmission of personal information to and from our Services is at your own risk. You should only access the Services within a secure environment.

6. DO WE COLLECT INFORMATION FROM MINORS?

In Short: We do not knowingly collect data from or market to children under 18 years of age.

We do not knowingly collect, solicit data from, or market to children under 18 years of age, nor do we knowingly sell such personal information. By using the Services, you represent that you are at least 18 or that you are the parent or guardian of such a minor and consent to such minor dependent’s use of the Services. If we learn that personal information from users less than 18 years of age has been collected, we will deactivate the account and take reasonable measures to promptly delete such data from our records. If you become aware of any data we may have collected from children under age 18, please contact us at support@blindflag.com.

7. WHAT ARE YOUR PRIVACY RIGHTS?

In Short: You may review, change, or terminate your account at any time, depending on your country, province, or state of residence.

Withdrawing your consent: If we are relying on your consent to process your personal information, which may be express and/or implied consent depending on the applicable law, you have the right to withdraw your consent at any time. You can withdraw your consent at any time by contacting us by using the contact details provided in the section "HOW CAN YOU CONTACT US ABOUT THIS NOTICE?" below.

However, please note that this will not affect the lawfulness of the processing before its withdrawal nor, when applicable law allows, will it affect the processing of your personal information conducted in reliance on lawful processing grounds other than consent.

If you have questions or comments about your privacy rights, you may email us at support@blindflag.com.

8. CONTROLS FOR DO-NOT-TRACK FEATURES

Most web browsers and some mobile operating systems and mobile applications include a Do-Not-Track ("DNT") feature or setting you can activate to signal your privacy preference not to have data about your online browsing activities monitored and collected. At this stage, no uniform technology standard for recognizing and implementing DNT signals has been finalized. As such, we do not currently respond to DNT browser signals or any other mechanism that automatically communicates your choice not to be tracked online. If a standard for online tracking is adopted that we must follow in the future, we will inform you about that practice in a revised version of this Privacy Notice.

California law requires us to let you know how we respond to web browser DNT signals. Because there currently is not an industry or legal standard for recognizing or honoring DNT signals, we do not respond to them at this time.

9. DO UNITED STATES RESIDENTS HAVE SPECIFIC PRIVACY RIGHTS?

In Short: If you are a resident of California, Colorado, Connecticut, Delaware, Florida, Indiana, Iowa, Kentucky, Maryland, Minnesota, Montana, Nebraska, New Hampshire, New Jersey, Oregon, Rhode Island, Tennessee, Texas, Utah, or Virginia, you may have the right to request access to and receive details about the personal information we maintain about you and how we have processed it, correct inaccuracies, get a copy of, or delete your personal information. You may also have the right to withdraw your consent to our processing of your personal information. These rights may be limited in some circumstances by applicable law.

Categories of Personal Information We Collect

We only collect sensitive personal information, as defined by applicable privacy laws or the purposes allowed by law or with your consent. Sensitive personal information may be used, or disclosed to a service provider or contractor, for additional, specified purposes. You may have the right to limit the use or disclosure of your sensitive personal information. We do not collect or process sensitive personal information for the purpose of inferring characteristics about you.

10. DO WE MAKE UPDATES TO THIS NOTICE?

In Short: Yes, we will update this notice as necessary to stay compliant with relevant laws.

We may update this Privacy Notice from time to time. The updated version will be indicated by an updated "Revised" date at the top of this Privacy Notice. If we make material changes to this Privacy Notice, we may notify you either by prominently posting a notice of such changes or by directly sending you a notification. We encourage you to review this Privacy Notice frequently to be informed of how we are protecting your information.

11. HOW CAN YOU CONTACT US ABOUT THIS NOTICE?

If you have questions or comments about this notice, you may email us at support@blindflag.com or contact us by post at:

BlindFlag Boston, MA United States

12. HOW CAN YOU REVIEW, UPDATE, OR DELETE THE DATA WE COLLECT FROM YOU?

Based on the applicable laws of your country or state of residence in the US, you may have the right to request access to the personal information we collect from you, details about how we have processed it, correct inaccuracies, or delete your personal information. You may also have the right to withdraw your consent to our processing of your personal information. To request to review, update, or delete your personal information, please submit a data subject access request.