Fax machines are still widely used, particularly in public administration and larger organizations in general.
The preposterous as well as appalling argument often heard in favour of this is that "fax is more secure than email" and somehow doesn't put privacy and the sacred German "data protection" at risk (because said data protection seemingly on applies to digital stuff).
Famously - or rather notoriously, during the pandemic local German health authorities faxed case numbers and other relevant data to federal authorities, which led to massively delayed response times and a general unavailability of dependable, actionable data.