@Misc{JRS05,
  author = 	 { Ari Juels and Ronald L. Rivest and Michael Szydlo },
  title = 	 { Method and apparatus for selective blocking of radio frequency identification devices },
  howpublished = { U.S. Patent 6,970,070.  Issued November 29, 2005. },
  date =         { 2005-11-29 },                  
  OPTyear = 	 { 2005 },
  OPTmonth = 	 { November 29, },
  urla =         { <a href="http://www.google.com/patents/US6970070">google-patent-page</a> },                                    
  abstract =     { Techniques are disclosed for providing enhanced
                  privacy in an RFID system comprising a plurality of
                  RFID devices, each having an associated identifier,
                  and at least one reader which communicates with one
                  or more of the devices. A blocker device is
                  operative to receive a communication directed from
                  the reader to one or more of the RFID devices, and
                  to generate, possibly based on information in the
                  received communication, an output transmittable to
                  the reader. The output simulates one or more
                  responses from at least one of the RFID devices in a
                  manner which prevents the reader from determining at
                  least a portion of the identifier of at least one of
                  the RFID devices. The blocker device may itself
                  comprise one of the RFID devices. In an illustrative
                  embodiment, the output generated by the blocker
                  device interferes with the normal operation of a
                  singulation algorithm implemented by the reader.  
                 },                  
}