Privacy policy

1Who we are and how to contact us

The data controller is the operator of the Znamky.cz online shop:

Tomáš Veselý
Company ID (IČO): 71558497
Ke Kozím hřbetům 9A, 165 00 Prague – Suchdol
Czech Republic
E-mail: info@znamky.cz

For any matter concerning the protection of personal data you can reach us at the e-mail address above.

This policy describes what personal data we process on www.znamky.cz and in the Znamky.cz mobile app for Android and iOS, for what purpose and for how long.

Purchase conditions are covered separately in our Terms and Conditions.

2Data processed when you shop

When you create an account and place an order we process:

• Identification and contact details — first name, surname, e-mail, phone number and delivery or billing address. We need these to conclude and fulfil the purchase contract.
• Order data — the contents of the order, price, shipping and payment method, order status and parcel delivery status.
• Payment data — card payments are processed by Stripe. Your card number never reaches us and we do not store it; we only receive confirmation of whether the payment succeeded.
• Credit and discounts — your loyalty credit balance and the history of how it was earned and spent.

The legal basis is the performance of a contract and compliance with our legal obligations (in particular accounting and tax law).

3The Znamky.cz mobile app

The app uses the same account as the website. In addition to the data listed above, it processes:

• Photographs you take or upload in the app — when identifying stamps, saving items to your digital collection, building exhibits and offering material for us to buy. Photographs are stored on our servers and are visible only to you, unless you choose to publish them in the public collection exhibition.
• The contents of your collection — items, folders, notes, estimated values and your wantlist.
• Google sign-in — if you sign in with a Google account, we receive your name and e-mail address from it. Your Google password never reaches us.
• App usage data — screens visited, searches and shopping events. We process these through Google Firebase Analytics in order to improve the app. The data is used for aggregate statistics.
• Diagnostic data — information about crashes and errors that helps us keep the app stable.
• Device identifier for notifications — if you allow notifications, we store your device token so we can inform you about an order, an auction or news.

The app does not collect location data, does not access your contacts and does not record audio.

4Permissions the app requests

• Camera — photographing stamps for identification, the magnifier feature and creating exhibit pages.
• Access to photos — selecting existing images to upload to your collection, an exhibit or a sell offer.
• Notifications — sending information about order status, auctions and news. You can turn notifications off at any time in the app's account settings or in your phone's system settings.

Each permission is requested only when you first use the relevant feature, and you may decline it. Without the camera or access to photos the identification and collection features will not work; the rest of the app remains available.

5Who we share data with

We never sell personal data. We share it only with processors that allow us to run the service:

• Stripe — card payment processing.
• Google (Firebase) — delivering notifications and measuring app usage.
• Czech Post and Zásilkovna — parcel delivery; we pass on name, address and phone number.
• Artificial intelligence service providers — for stamp identification only the photograph itself is transmitted, without your identifying details.
• E-mail and SMS service providers — sending order confirmations and delivery updates.

6How long we keep data

• Account data, collection, exhibits and photographs — for as long as your account exists.
• Orders, invoices and tax documents — for the period required by accounting and tax legislation, even after the account is closed.
• Newsletter data — until you withdraw your consent.
• Usage statistics — in aggregate form, without the possibility of linking them back to an individual.

7Deleting your account

You can close your account at any time, in two ways:

• in the mobile app under My account → Delete account,
• on the website at www.znamky.cz/en/delete-account.

What we delete: your profile and sign-in details, addresses, digital collection including uploaded photographs, exhibits, wantlist, favourites, preferences, unused loyalty credit and device identifiers used for notifications.

What is retained: issued orders and tax documents. We are required by law to keep these; after the account is deleted they are no longer linked to an active user account.

Deletion cannot be undone. If you have an order in progress or unpaid, please complete it first or contact us.

8Your rights

In relation to your personal data you have the right:

• to access the data and obtain a copy,
• to have inaccurate data corrected,
• to erasure (the "right to be forgotten"),
• to restriction of processing,
• to data portability,
• to object to processing,
• to withdraw consent where processing is based on it.

You can exercise these rights at info@znamky.cz. You also have the right to lodge a complaint with the Czech Data Protection Authority (www.uoou.cz).

9Cookies and analytics

On the website we use necessary cookies for the shopping cart and sign-in to work, plus analytical and marketing cookies for which we ask your consent through a consent management tool. You can change your consent at any time.

The mobile app does not use cookies; measurement is done through Firebase Analytics as described above.

This policy is effective from 30 July 2026.