Biometrics for Network Security (Prentice Hall Series in Computer Networking and Distributed)

Statistical measures of biometrics can be used to decide which biometric system will best suit your needs. Not knowing the math behind a measurement should not impact one's ability to understand and compare the different statistical measures. The most important biometric statistical measures are:

• FAR ” Measures the probability that an imposter will authenticate as a legitimate user .

• FRR ” Measures the probability that a user who makes a legitimate claim about his/her identity will be falsely rejected.

• FTE ” Measures the probability that an enrollment candidate will be unable to enroll in the biometric system.

• ERR ” Measures the intrinsic strength of the biometric system and compares the strength of different biometric systems based on their EERs.

For each implementation, one or more of these biometric statistical measures can be important. To decide which ones are important, look at how the biometric system is going to be implemented, as well as how the user population is defined.