BFD is Best finger detection .The best finger of a resident is the one that has the highest probability of matching. A resident can possess one or more best fingers, which can be detected during the Best Finger Detection (BFD) process. Operator checks the resident’s fingers and captures all fingers from both hands (generally ten) to determine the best fingers. Once the best attempt is captured for all fingers, It is then compared with the biometric data stored with UIDAI CIDR. Based on the response, results are communicated indicating the best fingers of the resident with the rankings in decreasing order.