Automated Fingerprint Identification Systems (AFIS) in law enforcement and border control applications has increased the need to ensure that these systems do not are compromised. Although several issues related to the security of the fingerprint system have been investigated, including the use of false fingerprints to disguise identity, the issue of fingerprint alteration or obfuscation has received very little attention. Fingerprint obfuscation refers to the deliberate alteration of the fingerprint pattern by an individual for the purpose of masking his or her identity. Numerous cases of fingerprint blurring have been reported in the press. Also the NFIQ algorithm used to evaluate the large database of altered fingerprints. We also proposed the NFIQ2.0 algorithm to examine the fingerprint. This algorithm follows the steps 1. Improve the quality of the image (fingerprint) from the database 2. Convert them into high-quality fingerprints. So the process similar to NFIQ. This result shows the feasibility of the proposed NFIQ2.0 approach in detecting altered fingerprints.1 INTRODUCTION Fingerprint recognition has been successfully used by law enforcement to identify suspects and victims for almost 100 years. Recent advances in automated fingerprint identification technology, along with the growing need for reliable identification of individuals, have led to increased use of fingerprints in both government and civilian applications such as border control, employment background checks and safe access to facilities. The success of fingerprint recognition systems in accurately identifying people has led some individuals to take extreme measures to circumvent these systems. The main purpose of altering fingerprints......half of paper......has pushed some individuals to take extreme measures to evade identification by altering their fingerprints. The problem of altering or obfuscating fingerprints is very different from that of fingerprint spoofing, in which an individual uses a fake fingerprint to adopt the identity of another individual. While the problem of spoofing has received considerable attention in the literature, the problem of obfuscation has not been addressed in the biometric literature, despite numerous documented cases of fingerprint alteration for the purpose of evading identification. While blurring can occur with other biometric modalities (such as face and iris), this issue is particularly significant in the case of fingerprints due to the widespread use of AFIS in both government and civilian applications and the ease with which fingerprints can be obscured.
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