@inproceedings{deluca2007ozchishort,
 author = {De Luca,, Alexander and Weiss,, Roman and Hussmann,, Heinrich},
 title = {PassShape: stroke based shape passwords},
 booktitle = {OZCHI '07: Proceedings of the 2007 conference of the computer-human interaction special interest group (CHISIG) of Australia on Computer-human interaction: design: activities, artifacts and environments},
 year = {2007},
 isbn = {978-1-59593-872-5},
 pages = {239--240},
 location = {Adelaide, Australia},
 doi = {http://doi.acm.org/10.1145/1324892.1324943},
 publisher = {ACM},
 address = {New York, NY, USA},
 }