Hacking the Galaxy S8’s Iris Biometric

It was easy: The hackers took a medium range photo of their subject with a digital camera’s night mode, and printed the infrared image. Then, presumably to give the image some depth, the hackers placed a contact lens on top of the printed picture….

It was easy:

The hackers took a medium range photo of their subject with a digital camera's night mode, and printed the infrared image. Then, presumably to give the image some depth, the hackers placed a contact lens on top of the printed picture.

from https://www.schneier.com/blog/