Most of us store almost our entire lives on our phones, and for that reason we want them to be secure. There are many ways to protect our data, including mere unlock patterns, passwords, and of course biometrics. While many trust the latter to be particularly safe, they can still be fooled. Indeed, we already know the S10's face unlock isn't particularly trustworthy, we thought its in-display fingerprint scanner to be foolproof, thanks to its ability to sense blood flow. However, a recent experiment proved the phone can be unlocked using 3D printed fingerprints, just like other handsets mistook fake heads for actual ones.