Stefan Penninger

According to our database, Stefan Penninger authored at least 2 papers in 2012.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2012

Usability von CAPTCHA-Systemen.

Stefan Penninger, Stefan Meier, Hannes Federrath

Proceedings of the Sicherheit 2012: Sicherheit, 2012

VidPass Passwörter in Raum und Zeit. Zur Usability von Videopasswörtern.

Stefan Penninger, Tim Schneidermeier, Hannes Federrath, Christian Wolff

Proceedings of the Mensch & Computer 2012: interaktiv informiert, 2012