Why? If you can reliably determine that a fingerprint actually belongs to a person... it's not as if I can make my fingerprint mimic yours if I happen to come a

Why? If you can reliably determine that a fingerprint actually belongs to a person... it's not as if I can make my fingerprint mimic yours if I happen to come across a photo of your fingerprint... Of course, simple sensors such as phone fingerprint readers can easily be tricked, but that's an issue with that specific implementation (similarly to how you can sometimes see greasy traces of unlock pattern on phone screens), not of the general idea...