UNIVERSITY EXAMINATIONS: 2011/2012
THIRD YEAR EXAMINATION FOR THE BACHELOR OF
SCIENCE IN INFORMATION TECHNOLOGY
BIT 4205 BIOMETRICS SYSTEMS ENGINEERING
DATE: AUGUST, 2012 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE
a) In the development of biometric identification systems, physical and behavioral
characteristics for recognition are required. Describes four attributes that
characterize a biometric. (8 Marks)
b) “Biometrics” is a general term used alternatively to describe a characteristic or a
process” Explain the two terms. (2 Marks)
c) Describe the two main biometric characteristics categories (4 Marks)
d) Using a diagram describe the biometrics authentication process (6 Marks)
e) The methods of determining authentication are described as factors. Identify and
explain these three factors. (6 Marks)
f) Using examples define the term esoteric biometrics. (4 Marks)
QUESTION TWO
a) Specific liveness detection measures vary from technology to technology but all
liveness detection techniques fall into one of three categories. Discuss atleast two
categories using relevant illustrations. (8 Marks)
b) As any other system and technology the biometric technology has its
vulnerabilities. Discuss atleast four types of attack that can occur in a biometric
system. (12 Marks)
QUESTION THREE
a) You have been contracted as a biometrics expert by a client who wants to
implement a biometrics systems application to give him advice on which
biometric systems is preferable for implementation. Discuss six key factors used
in the selection of a biometric device installation. (12 Marks)
b) When biometrics systems are used for identification or authentication there are
four possible outcomes. Identify these outcomes. (8 Marks )
QUESTION FOUR
a) Voice Scan systems can be categorized into three different types depending on
how the voice scan system works. Identify these three categories. (6 Marks)
b) Facial recognition is not sufficiently accurate to perform large identification
achieved by fingerprints or iris and are hindered by the several problems when
determining the identity of two photographs of the same person. Discuss atleast
four of these problems. (4 Marks)
c) Discuss atleast four issues to be considered under functional requirements when
integrating biometrics into an organization. (10 Marks)
QUESTION FIVE
a) After generation, the template needs to be stored. Discuss three possible options
for biometric data storage repositories. (6 Marks)
b) There are some key business and user convenience drivers for the implementation
of biometric systems however there are some disadvantages and concerns with the
implementation of biometric systems. Discuss these advantages and constraints.
(10 Marks)
c) In what regard are behavioral characteristics more vulnerable to changes.
(4 Marks)
