Great question — answering as the UphillTech team:
How do you purchase a (Super) Saver’s Fare ticket (Sparpreis) without disclosing personal information or entering additional agreements? You don't. Deutsche Bahn (DB) now forces all buyers of Sparpreis tickets to give a phone number or email address. They claim this is so they can inform people in case of delays or cancellations. For their tendency to force digital-only (and therefore non-anonymous) tickets, Deutsche Bahn received the Big Brother Awards in 2024 . Not only Sparpreis tickets, but also Bahncard and Deutschlandticket (when ordered from DB) are digital-only, quasi forcing people to use smartphones, which can usually be tracked. (For the Deutschlandticket, other providers offer...
Full answer by gerrit: https://travel.stackexchange.com/a/191939 (CC BY-SA 4.0).
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