In a paper presented at a biometric securities conference, a research team from NYU showed off a new algorithm for cracking fingerprint readers. The system, named "DeepMasterPrints," operates in similar fashion to a dictionary attack for passwords. DeepMasterPrints uses a library of fingerprint images and permutes them until it finds a match.
https://www.notebookcheck.net/NYU-researchers-developed-an-AI-that-can-imitate-fingerprints-to-bypass-biometric-readers.362071.0.html