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Cookie policy

What this site stores in your browser and why. We do not use advertising or analytics cookies.

Last updated: October 6, 2026

Summary

This site only uses cookies that are necessary for it to work (keeping you signed in and protecting access) and saves a few preferences in your browser. It does not use advertising cookies or analytics or tracking tools, which is why we do not show a banner to accept or reject them.

Necessary cookies

They are created only when you sign in to the customer portal:

  • summa-customer-session and summa-subuser-session: keep you signed in. They last 4 hours.
  • summa-portal-pk-reg and summa-admin-pk-auth: verify the registration or use of a passkey. They last 5 minutes.

Preferences saved in your browser

This data is kept in your browser’s local storage, is not used to track you and is only read on this site:

  • Chosen language (summa_lang).
  • Last values used in the rate calculator (summa-calculator).
  • Name and email you typed in the contact form, so we do not ask for them again (user, summa-user, summa_user).
  • State of the portal side menu (open or collapsed).
  • During a payment, a temporary transaction identifier that is deleted when it finishes (__pt).

Third-party cookies

The payment page loads PayPal’s system, which may create its own cookies to process the payment and prevent fraud. Those cookies are controlled by PayPal and governed by its own privacy policy.

How to delete or block them

You can delete or block cookies and local storage from your browser settings. If you block the necessary cookies you will not be able to sign in to the portal; the rest of the site will keep working.

Changes

If we add analytics or advertising tools in the future, we will update this policy and ask for your consent before turning them on.

Questions about this document?Write to us