@misc{cryptoeprint:2005:052, author = {Ziv Kfir and Avishai Wool}, title = {Picking Virtual Pockets using Relay Attacks on Contactless Smartcard Systems}, howpublished = {Cryptology ePrint Archive, Report 2005/052}, year = {2005}, url = {http://eprint.iacr.org/2005/052}, }