Although I have no doubt it could work, I guess they didn't try the copy? Couldn't find the video of the conference. He probably demo'ed using a copy of his own

Although I have no doubt it could work, I guess they didn't try the copy? Couldn't find the video of the conference. He probably demo'ed using a copy of his own fingerprint from a photo? It's great work, I hope the fact that you can make a copy from a simple HD photo will bury people's ideas about fingerprints security for good.