user interface module 196 in cooperation with the output device 250 and input device 240 provides to the user a user interface via which they can select a desired false match rate and apply the threshold that will result in that desired false match rate this threshold is then applied with the cooperation of the threshold module 130 as an example a gallery database has 10 000 samples derived from 10 000 different individuals the number of unique match scores generated in this manner is equal to n n u2212 1 2 where n is the number of samples in the database the number of unique match scores is therefore 49 995 000 a user interfacing with the user interface module 196 can then indicate that they desire the system to perform with a false match rate of for example 1 in 10 000 this aligns with the total number of match scores above a threshold of 5 000 in the cumulative histogram data table described above there is a match score threshold that results in a total of 5 000 scores above it the threshold module 130 could then apply this threshold to the system once applied and in cooperation with the alert module 180 an alert could optionally be generated and forwarded to a destination such as output device 250 to alert the user to the resulting fmr with the threshold in use based on actual results using the gallery samples in use examples of alerts include text based alerts such as an email as well as audible or visual alerts displayed in cooperation with the display in accordance with.