What we collect

We keep it minimal:

• Email – Optional. Only if you link one for card recovery.
• Language – Your preferred display language.
• Stamps – Your collection history and redeemed benefits.

Why we collect it

• Email helps you recover your card if you lose access.
• Language shows the app in your preferred language.
• Stamps track your progress in shop loyalty programs.

Your rights

You have full control:

• Access – Download your data at any time.
• Edit – Update your email address.
• Delete – Remove everything permanently.

All directly from your card’s settings page — no need to contact anyone.

Data retention

Your data is stored until you delete it. When you delete your card, your email address is removed immediately. Anonymous statistics (e.g. stamp counts) may be retained for the shop’s records.

Legal basis

We process personal data only where necessary to provide the service (performance of a contract), where you choose to provide it (consent), or where we have a legitimate interest in operating and improving Summa.

Third parties

We use Resend to send emails. Depending on location, data may be processed outside the EU. We rely on appropriate safeguards as required by GDPR. No trackers, no analytics, no data sales.

Controller

The data controller is Ferdinand Salis, Vienna, Austria.
Contact: mail@ferdinandsalis.com

Complaints

If you believe your data protection rights have been violated, you have the right to lodge a complaint with the Austrian Data Protection Authority (DSB).

Last updated: 2026-01-31