Krissler, along with Chaos Computer Club published the fingerprints of then Interior Minister Wolfgang Schäuble as a means of protest as well as proof of concept.

[2][3] Previously, Schäubles Ministry of the Interior had introduced biometric passports which included a digital copy of the holder's fingerprint.

He further refined the attack in 2014 when he reproduced Minister of Defense Ursula von der Leyen's fingerprint from a high resolution press photo.

[4] In 2014, Neurotechnology's "VeriFinger" was used by Jan Krissler to recreate the German defense minister Ursula von der Leyen's fingerprint.

He is internationally recognized for his research on the risks emanating from high resolution smartphone cameras, which may allow malicious actors to covertly steal fingerprints.