Enhanced Fingerprint Recognition with OTP using Delaunay Triangulation to Improve ATM Security

摘要

Objectives: The main objective of this paper is to develop an alternative fingerprint verification system to overcome the false rejections that occur due to the external changes on fingers such as scratches by blade or knife. Those minute deformities on the finger might deny access to the authorized users. Methods: “Delaunay triangulation-based matching” method is proposed in this work in order to avoid the authentication error caused by inaccurate enrollments and sending OTP to ensure maximum security in authentication. This triangulation method provides seamless access for the authorized users at ATMs even with altered fingerprints and also it improves the security. Findings: This technique is implemented by forming the triangle, make the reference point at the center and then it is used for the matching. If the difference is less than the predetermined threshold value, it approves the authentication. It otherwise rejects user’s authentication. So this proposed method will be useful for authorized users when their fingerprints are wounded or slightly cracked which will be usually rejected in existing methods. Applications/Improvements: Delaunay triangulation-based matching method can be effectively used in applications of banking like ATMs, E-banking, and POS counters etc.