Now-a-days advanced communication and the internet are almost accessible electronically. The users bring the need for electronic services and their security through advanced electronics and computer technology. Usage of new technology in banking, and financial institutions in any form of internet banking should have effective and reliable methods to authenticate customers. Keeping this in viewpoint an effective bio-metric automated digital transaction system is developed. The entire book is divided into five chapters. Chapter 1, is introductory. It deals with an introduction to various bio-metric fingerprint system identification, patterns, and objectives. Chapter 2, represents the design methodology system hardware requirements and all the modules included in the purposed system. Chapter 3, delivers a discussion of the methodology and implementation of fingerprint image enhancement algorithms. Chapter 4, explains the infinite noise-based true random finger number generation and its methods. Results and discussion are covered in Chapter 5.