Biometric Template Protection (BTP)

Motivation & Goals

Biometric data are classified as the sensitive personal data by the EU General Data Protection Regulation (GDPR) and therefore need to be accordingly protected for its use and storage. Due to their noisy nature (e.g., due to a change in the illumination when acquiring a facial picture or a temporal sickness), dedicated methods need to be developed to ensure end-to-end protection. Multiple approaches have been presented in the literature, mostly focusing in particular biometric characteristics. The goal is to develop general approaches, valid for several characteristics, and possibly multi-biometric algorithms.


  • Study the state-of-the-art in BTP for the chosen protection method (e.g., biometric cryptosystems, homomorphic encryption, or differential privacy)
  • Develop and evaluate new BTP methods (regarding recognition rates, irreversibility and unlinkability of the protected templates)
  • Benchmark the developed methods against the state-of-the-art


Marta Gomez-Barrero (