I understand that the iris is the most accurate biometric modality since it has a false acceptance rate of about 1 in 1,000,000. Fingerprint on the other had is about 1 in 1000.
These error rates seem too high in my opinion. If a fingerprint system makes an error after every 1000 tries, then this means airports can allow through a lot of fake people. At a busy airport, an error rate of 1 in 1000 could mean 10 to 50 bad guys going through per day.
Also, for iris, 1 in 1,000,000 seems too high. I thought iris had an error rate closer to zero than this. In a year, you could have a lot of bad guys going through if the error rate is 1 in 1 million.
Could I be missing something when it comes to interpreting these error rates in practice?