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Everything editors, podcast teams and event organisers need for an enquiry: short bio, conversation topics, sample questions and a press photo. Talks and interviews are mainly held in German. Please send enquiries to [email protected].
Short bio
Felix Konstantin Brandt is an engineer whose profession is resilience. A question at his own dinner table showed him that the most important operation in his life had no contingency plan. That question became his first book, “Das letzte Passwort”, now in progress. He is the founder of 21 Fruits.
Felix Konstantin Brandt is an engineer. He came to engineering by the long route: an apprenticeship as a car mechanic, a master craftsman qualification, then an engineering degree. His profession is resilience – making sure everything keeps running when a machine, a supplier or a person drops out.
After a sudden loss close to him, a question came up at his own dinner table: would his family be able to get to everything if something happened to him? The honest answer was no. That answer became first a single sheet of paper, then his first book, “Das letzte Passwort”, now in progress.
He is the founder of 21 Fruits, which helps families hold their own Bitcoin and stay able to act if something happens. From 2019 to early 2026 he taught project management and cost accounting at Albstadt-Sigmaringen University and Pforzheim University. He is married with three children.
Conversation topics
What happens to accounts, data and access when you are unavailable – and how families stay able to act.
Self-custody made understandable: control, responsibility and the practical limits of technical sovereignty.
Why authority is not access – and how recovery can be tested in advance.
What a system actually proves – and which uncertainty remains.
Sample questions
Press photo
At a glance
