@inproceedings{CHI-2015-ZezschwitzLJH,
	author        = "Emanuel von Zezschwitz and Alexander De Luca and Philipp Janssen and Heinrich Hußmann",
	booktitle     = "{Proceedings of the 33rd ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/2702123.2702202",
	isbn          = "978-1-4503-3145-6",
	pages         = "2339--2342",
	publisher     = "{ACM}",
	title         = "{Easy to Draw, but Hard to Trace?: On the Observability of Grid-based (Un)lock Patterns}",
	year          = 2015,
}