Biometrics are becoming our next de facto security measure, and they're supposed to be a vast improvement on easily-forgotten and hackable passwords. Yet a point-and-shoot camera, laser printer and contact lens is all it took for German hacking group Chaos Computer Club to crack the Samsung Galaxy S8's iris scanner. "By far [the] most expensive part of the iris biometry hack was the purchase of the Galaxy S8," the group wrote on its website.

They pulled it off by taking a photo of the target from about five meters away, and printing a close-up of the eye on a laser printer — made by Samsung, no less. A regular contact lens was placed on top of the print to replicate the curve of an eyeball. When the print was held up to the smartphone, the S8 unlocked.