What does the petitions site see?

This site is built to know as little as possible about you.

What the petitions site cannot see

Your signature details are locked on your device before leaving it. Only the petition author can open them.
Which petitions you signed: signatures arrive without your account.
Whether you signed a petition before: the site always answers the same way.
Your saved details and what you signed: they are locked with your passkey.

Your email, if you choose to get the link by email. The email provider sees it too. The email never says which petition you signed.
That an account exists, and when it was created (the day only).
Petition texts, recipients, the responsible author’s public details and contact, and counts: they are public.

The site cannot guarantee that each person participates only once. Repeated signatures may occur and the author should review them before delivery.
Equal document numbers mean the same number was typed twice, not that the same person signed twice.
Whoever runs the site could, with bad intentions, change the site's code. The public logs and the checking program help detect this.
Your internet connection shows where a request comes from. For more privacy, use another network.