For our April 2014 issue, we cover recent patents granted in the area of biometric template protection. This is a method of enabling biometric recognition without directly storing biometric features in the enrolment database. The section below covers patents granted recently for methods of extracting auxiliary data from a biometric that enables recognition in the absence of the biometric features. The methods are based on error correcting codes, public key crypto systems, signal transformations, and robust signal hashing. Number: 8,412,950 Title: Defining classification thresholds in template protection systems Inventors: T. A. Kevenaar, B. Bouwman, J. Strous, M. Van der Veen Issued: April 2, 2013 Assignee: Koninklijke Philips Electronics N.V. (Eindhoven, Netherlands) Number: 8,359,475 Title: System, method and program product for generating a cancelable biometric reference template on demand Inventors: P. Griffin Issued: January 22, 2013 Assignee: International Business Machines Corporation (Armonk, NY) Number: 8,249,314 Title: Anonymous and revocable fingerprint recognition Inventors: R. Bolle, J. Connell, T. -Y. Jea, N. Ratha Issued: August 21, 2012 Assignee: International Business Machines Corporation (Armonk, NY) Number: 8,625,785 Title: Identity based symmetric cryptosystem using secure biometric model Inventors: N. Nagaraja Issued: January 7, 2014 Assignee: QUALCOMM Incorporated (San Diego, CA) Number: 8,583,936 Title: Key generation using biometric data and secret extraction codes Inventors: P. Tuyls, J. Goseling Issued: November 12, 2013 Assignee: Koninklijke Philips N.V. (Eindhoven, Netherlands) Number: 8,670,562 Title: Generation and use of a biometric key Inventors: J. Bringer, H. Chabanne, D. Pointcheval, S. Zimmer Issued: March 11, 2014 Assignee: Morpho, Centre National de la Recherche Scientifique, and Ecole Normale Superieure (Paris, France) Number: 8,290,221 Title: Apparatus and method for polynomial reconstruction in fuzzy vault system Inventors: W. Choi, K. Moon, S. Lee and Y. Chung Issued: October 16, 2012 Assignee: Electronics and Telecommunications Research Institute (Daejeon, Korea) Number: 8,433,920 Title: Method and system for authenticating reliable biometric data Inventors: Y. Wang, S. Rane and A. Vetro Issued: April 30, 2013 Assignee: Mitsubishi Electric Research Laboratories, Inc. (Cambridge, MA) Number: 8,005,277 Title: Secure fingerprint matching by hashing localized information Inventors: S. Tulyakov, F. Farooq, S. Chikkerur and V. Govindaraju Issued: August 23, 2011 Assignee: Research Foundation-State University of NY (Amherst, NY) Number: 8,433,983 Title: Secure protection of biometric templates Inventors: P. Tuyls, A. Akkermans, and J. Goseling Issued: April 30, 2013 Assignee: Koninklijke Philips Electronics N.V. (Eindhoven, Netherlands). If you have an interesting patent to share when we next feature patents related to biometrics, or if you are especially interested in a signal processing research field that you would want to be highlighted in this section, please send email to Shantanu Rane (rane AT merl DOT com).