Biometrics in electronic travel documents

International travel documents now regularly carry digital biometric data such as headshots and fingerprints. They are poised to support the largest biometric authentication infrastructure in the world. I'll discuss the trust assumptions around biometric authentication in ePassports (passports with integrated chips) and a border-crossing document in the United States known as the "Passport Card." I'll also describe the problem of template disclosure in biometric databases, and how it defines a research frontier between cryptography and signal processing.