D4FLY Multimodal Biometric Database: multimodal fusion evaluation envisaging on-the-move biometric-based border control. - Lulu Chen; Jonathan Boyle; Antonios Danelakis; James M. Ferryman; Simone Ferstl; Damjan Gicic; Artur Grudzien; André Howe; Marcin Kowalski; Krzysztof Mierzejewski; Theoharis Theoharis (AVSS, 2021)