"Analysis of the Texas Instruments DST RFID"
A group at Johns Hopkins and RSA security have interesting new attacks on the RFID chips used in Mobil Speedpass. They’ve put up a web site at http://www.rfidanalysis.org, and gotten some press at the New York Times.
[Edited 29/4/2017 to unlink RFIDanalysis.org because Google claims its distributing malware.]