Until today, German authorities were keen on using telefax. The Bremen Data Protection Authority has now announced that fax is not a safe method for the communication of sensitive personal data (Art. 9 GDPR) and personal data generally. The reason: Telefax transmission is mostly digital and recipients often do not receive this via a fax-machine, but rather via digital means, e.g. email. This is groundbreaking for Germany, the fax-nation. It will mean a major shift for all participants as the preferred method of fast-transmission for German authorities and courts used to be fax.
Solutions? - Use snailmail, encrypted email or encrypted upload spaces.