With such high claims, Imgur used darkshark set out to prove that even this impressive piece of tech could be overcome with a simple trick – 3D printing a fingerprint.
“It took me 3 reprints trying to get the right ridge height (and I forgot to mirror the fingerprint on the first one) but yeah, 3rd time was the charm. The 3D print will unlock my phone… in some cases just as well as my actual finger does,” darkshark explains.
3D Print a Finger But Don’t Steal a Phone
In order to 3D print a fingerprint to fool the ultrasonic scanner, all darkshark needed to do was take a photograph of their fingerprint on the side of a wine glass with a smartphone.
Next, using Photoshop, darkshark increased the contrast and created an alpha mask. This was exported to 3ds Max where a geometry displacement could be created to give a raised 3D model of every last detail of the fingerprint.
After preparing the model in 3D printing software, it was ready to print on an accurate AnyCubic Photon LCD resin printer. Print time was just 13 minutes and it worked a charm.
However, darkshark adds that there are many ethical issues raised. Your fingerprints suddenly become easy to steal from across a bar using a long focal length DSLR camera…
Perhaps more worryingly, darkshark explains: “If I steal someone’s phone, their fingerprints are already on it. I can do this entire process in less than 3 minutes and remotely start the 3D print so that it’s done by the time I get to it. Most banking apps only require fingerprint authentication so I could have all of your info and spend your money in less than 15 minutes if your phone is secured by fingerprint alone.”
Worried? Perhaps you should say goodbye to newfangled technologies and rely on the safest method of locking your phone – a randomly generated password.