Easy to Draw, but Hard to Trace?: On the Observability of Grid-based (Un)lock Patterns. - Emanuel von Zezschwitz; Alexander De Luca; Philipp Janssen; Heinrich Hussmann (CHI, 2015)

Should I Interrupt or Not?: Understanding Interruptions in Head-Mounted Display Settings. - Ceenu George; Philipp Janssen; David Heuss; Florian Alt (Conference on Designing Interactive Systems, 2019)