After you log in to the voting system, the POLYAS server needs to save a cookie on your computer. This session cookie contains no personal data and is not used by us in any way other than to facilitate your voting. This ensures that voting and confirmation are performed by the same person. As soon as you close your browser after voting, the cookie is deleted automatically.
We would therefore ask you to enable cookies, as this improves your security when you cast your vote. The alternative would be a session ID which could be used by third parties. To prevent this, we use the session cookie to fully protect your voting secrecy.