@inproceedings {252832, author = {Brinda Dalal and Les Nelson and Diana Smetters and Nathaniel Good and Ame Elliot}, title = {Ad-hoc Guesting: When Exceptions Are the Rule}, booktitle = {Usability, Psychology, and Security 2008 (UPSEC 08)}, year = {2008}, address = {San Francisco, CA}, url = {https://www.usenix.org/conference/upsec-08/ad-hoc-guesting-when-exceptions-are-rule}, publisher = {USENIX Association}, month = apr }