Privacy Policy
Effective2026-08-09Version1.0
1.The short version
- We don't run ads, and we don't sell or share your information.
- We don't use analytics, advertising trackers, or third-party cookies.
- We never store your address. When you look up your districts, your address or map location is used to find your Census block, and then it's discarded.
- We know your Census block — an area of roughly 50 to 200 households — not where you live.
- Signing in requires no new password and no email or phone setup.
The rest of this policy is the detail behind those statements. Where a summary here and the detail below differ, the detail governs.
2.Who this policy covers
This policy explains how Project Euthyna, Inc. handles personal information on projecteuthyna.com and related services.
- Service
- projecteuthyna.com and every site, application, and service we operate that links to this policy.
- Census block
- the smallest geographic unit the U.S. Census Bureau defines, typically 50 to 200 households. It is the only record we keep of where you live.
- Identity provider
- the third-party service you sign in through — Microsoft, Google, or Apple.
3.Information we collect
3.13.1 Information you give us
Account information. When you sign in, your identity provider sends us:
| What | Why we keep it |
|---|---|
| A durable account identifier from the provider | Recognizing you across sign-ins |
| Your display name | Addressing you in the interface |
| Your email address | Identifying your account; support |
| First sign-in and most recent sign-in timestamps | Support and troubleshooting |
We never receive your password. We don't create one.
Choosing a provider. You can sign in with Microsoft, Google, or Apple. Each one is a separate account here, even if you use the same email address with more than one. We do this deliberately: the only thing the three have in common is an email address, and an email address isn't proof that two sign-ins are the same person. Treating it as proof could hand your account to someone else. If you sign in with a different provider than last time and your saved place and settings aren't there, that's why — sign in the way you did before and they will be.
If you use Apple's Hide My Email. Apple can give us a forwarding address instead of your real one. That works fine, and it's the address we store. If you later turn off forwarding on Apple's side, we lose the only way we had to reach you.
Your place. To show you your representatives, we need to know which districts you're in. You can either type an address or tap a point on a map. Either way:
- The address text or coordinate is sent to our server.
- Our server sends it to the U.S. Census Bureau Geocoder, which returns the Census block it falls in.
- We save the Census block identifier and your district codes.
- We discard the address text and the coordinate. They are never written to our database and never written to our logs.
We chose the Census block deliberately: it is precise enough to determine every district you vote in, and coarse enough that we cannot tell where you live. It is also stable across redistricting, so we can refresh your districts when boundaries change without asking you for anything again.
Things you send us. If you email us for support, report a correction, or send feedback, we keep that correspondence.
3.23.2 Information we collect automatically
Session cookie. When you sign in, we set one cookie, euthyna.session. It identifies your signed-in session. It is HttpOnly (JavaScript can't read it), SameSite=Lax, marked Secure over HTTPS, and expires after 14 days. It is strictly necessary for the Service to work.
We use no other cookies. We do not use analytics, advertising, or third-party tracking cookies of any kind.
Server logs. Our hosting infrastructure records ordinary technical information about requests — timestamps, request paths, response codes, error diagnostics — for reliability and security. We do not use these logs to build profiles of individuals. Address text and map coordinates are excluded from them by design.
3.33.3 Information we do not collect
We do not collect your precise location, your contacts, your device identifiers for advertising, your browsing on other sites, or any information about you from data brokers.
4.How we use information
We use the information described in 3 only to:
- Sign you in and keep you signed in.
- Show you your representatives and districts.
- Personalize and rank your Feed.
- Refresh your districts when boundaries change.
- Respond to your support requests.
- Keep the Service reliable and secure, and detect abuse.
- Understand how the Service is used in aggregate, in a form that does not identify you.
- Comply with the law.
We do not use your information to build advertising profiles, to infer or score your political views for any purpose other than ranking content for you, or to target you on behalf of anyone else.
5.How we share information
We do not sell your personal information, and we do not share it for cross-context behavioral advertising. We have never done so.
5.15.1 Service providers
We share information with providers who process data on our behalf, under contract, and only for the purposes we specify:
| Provider | What they handle |
|---|---|
| Microsoft Azure | Hosting, database, identity |
| Sign-in, when you choose to sign in with Google | |
| Apple | Sign-in, when you choose to sign in with Apple |
| U.S. Census Bureau Geocoder | Receives an address or coordinate to return a Census block; we have no contract with them, and their use of what they receive is governed by federal policy |
5.25.2 Your identity provider
When you sign in, your identity provider — Microsoft, Google, or Apple — knows you signed in to Project Euthyna. We don't control what they record about that. If that matters to you, review your provider's privacy policy. We send them nothing about you beyond what completing the sign-in requires, and we never send them anything about what you read or do here.
5.35.3 Legal and safety
We may disclose information if required by law, or if we reasonably believe disclosure is necessary to comply with legal process, enforce our Terms, or protect the rights, safety, or property of anyone. Where we are legally permitted to notify you of a demand for your information, we will.
5.45.4 Business transfers
If we are involved in a merger, acquisition, financing, or sale of assets, information may be transferred as part of that transaction — but only to a party that agrees in writing to be bound by this policy as it stands at the time of the transfer. A buyer inherits these commitments; it does not inherit the freedom to discard them.
We will give you notice on the Service before any such transfer takes effect, and you will have the chance to export your information and delete your account first.
This is the clause that decides whether the rest of this policy means anything past our involvement, which is why it's written this way.
6.How long we keep information
| Data | Retention |
|---|---|
| Address text, map coordinates | Not retained — discarded at resolution |
| Account record (identifier, name, email, timestamps) | Until you delete your account |
| Census block and district codes | Until you delete your account or change your place |
| Session cookie | 14 days, or until you sign out |
| Server logs | 30 days |
| Support correspondence | 2 years |
When you delete your account, we delete your account record and everything associated with it within 30 days, except where we are required to keep something by law.
7.Your choices and rights
Wherever you live, you may:
- See what we hold about you.
- Correct it if it's wrong.
- Delete your account and its data. You can do this yourself from the account menu.
- Take your information with you in a portable format.
- Change your place at any time, or clear it entirely.
- Sign out.
To exercise any of these, contact us at privacy@projecteuthyna.com. We'll respond within 45 days. We will not discriminate against you for exercising any of these rights.
7.17.1 California
The CCPA and CPRA give you rights to know, delete, correct, and to opt out of the sale or sharing of your personal information. We don't sell or share, so there is nothing to opt out of. We collect the categories described in 3: identifiers, and geolocation at Census-block resolution. You may designate an authorized agent to make a request for you.
7.27.2 Other states
If you're in Colorado, Connecticut, Virginia, Oregon, Texas, or another state with a comprehensive privacy law, you have comparable rights, including the right to appeal a denial. To appeal, reply to our response or write to privacy@projecteuthyna.com with “Appeal” in the subject.
8.How we protect information
Sign-in runs over OpenID Connect against your identity provider; we never see or store a password. The session cookie is HttpOnly and Secure. Data is encrypted in transit and at rest. Access to production data is limited to people who need it.
No system is perfectly secure. If a breach affects your information, we will notify you and the relevant authorities as required by law.
9.Children
The Service is not directed to children under 13, and we don't knowingly collect personal information from them. If you believe a child under 13 has given us information, write to privacy@projecteuthyna.com and we'll delete it.
10.Other sites
The Service links to government websites, officials' own contact pages, and other third-party sites. This policy doesn't cover them. Their practices are their own.
11.Changes to this policy
We may update this policy. If a change is material — particularly any change to what we collect, how long we keep it, or who we share it with — we'll post notice on the Service at least 30 days before it takes effect.
Every version of this policy is listed in the history at the end of this page.
12.Contact us
Project Euthyna, Inc.
1920 4th Ave, Unit 1609, Seattle, WA 98101
privacy@projecteuthyna.com
History
- 1.02026-08-09First published.