With more and more devices accepting finger prints in place of passwords, could it be possible to "keylog" these finger prints on mobile devices, for example, by installing a rogue application and then reproducing that finger print either digitally or physically in terms of 3D printing to gain access to other devices or locations?
One thing I was thinking too is what if someone develops an app(legit) and asks to use your finger print. From there they could technically reconstruct it and use it against you or even sell it and associate it to your identity.