@inproceedings{Roalter:2013:VAS:2541831.2541863,
 author = {Roalter, Luis and Kranz, Matthias and M\"{o}ller, Andreas and Diewald, Stefan and Stockinger, Tobias and Koelle, Marion and Lindemann, Patrick},
 title = {Visual Authentication: A Secure Single Step Authentication for User Authorization},
 booktitle = {Proceedings of the 12th International Conference on Mobile and Ubiquitous Multimedia},
 series = {MUM '13},
 year = {2013},
 isbn = {978-1-4503-2648-3},
 location = {Lule\aa, Sweden},
 pages = {30:1--30:4},
 articleno = {30},
 numpages = {4},
 url = {http://doi.acm.org/10.1145/2541831.2541863},
 doi = {10.1145/2541831.2541863},
 acmid = {2541863},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {authentication, authorization, intelligent environment, public displays, security, smartphones},
}