The new iPhone 5s comes with an interesting new security measure: a fingerprint reader! Just press your finger on the screen, and you're in! Easier than a password, right?
But wait! Does that mean criminals with knives will now steal both your phone and your finger and then have a working phone? Are you endanger of an index-finger amputation every time you use your phone in public? Will we see thousands of 9-fingered people wandering around without phones?
No! Your finger has to be attached to you to work. Experts say it reads the sub-epidermal layers of skin, and will not work once the finger has detached.
On the other hand (ha ha) it would be easy to spot which phones were stolen! "Excuse me while I get out my extra finger to unlock my phone. I think it's here in my pocket..."
photo: Getty Images