Yes. There are also different types. What type do you have? http://ridgesandfurrows.homestead.com/fingerprint_patterns.html
That is what they say?
.. yes... its the technology that is unreliable. thats why they arent held as empirical evidence in a court room.
I've read that they're not necessarily which is why the practice is changed to taking two fingerprints instead of one.
That's plausible. But, google what I wrote.