@inproceedings{vonZezschwitz:2013:PWF:2493190.2493231,
 author = {von Zezschwitz, Emanuel and Dunphy, Paul and De Luca, Alexander},
 title = {Patterns in the wild: a field study of the usability of pattern and pin-based authentication on mobile devices},
 booktitle = {Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services},
 series = {MobileHCI '13},
 year = {2013},
 isbn = {978-1-4503-2273-7},
 location = {Munich, Germany},
 pages = {261--270},
 numpages = {10},
 url = {http://doi.acm.org/10.1145/2493190.2493231},
 doi = {10.1145/2493190.2493231},
 acmid = {2493231},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {authentication, likeability, pattern, pin, usability},
}