A group of hackers managed to get around TouchID only a day after the launch by making a fake finger from a photograph of a fingerprint left on a glass surface.
Apple said TouchID “was not a total replacement for traditional security measures” and was meant to make unlocking the phone more convenient.
Ben Schlabs, of SRLabs, a German hacking think tank, said: “The security implications are the same, it is just as dangerous… I think it has been shown that it is pretty easy to spoof it and the risks aren’t fully understood.” He said using TouchID alone to gain access to a banking app introduced dangers that were not present when using passwords or Pins. "Just the fact that you are carrying the key around with you and leave copies of it exposed everywhere you go makes it a very different risk to something that is inside your brain. The risks are poorly understood.