UNIVERSITY EXAMINATIONS: 2012/2013
THIRD YEAR EXAMINATION FOR THE BACHELOR OF
SCIENCE IN INFORMATION TECHNOLOGY
BIT 4205 BIOMETRICS SYSTEMS ENGINEERING
DATE: DECEMBER, 2012 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE
a) Using fingerprint identification differentiate between authentication and identification
(4 Marks)
b) In the development of biometric identification systems, physical and behavioral
characteristics for recognition are required. Describes four attributes that characterize
a biometric (8 Marks)
c) “Biometrics” is a general term used alternatively to describe a characteristic or a
process” Explain the two terms (4 Marks)
d) Describe atleast four types of the common biometrics (4 Marks)
e) After generation, the template needs to be stored. Discuss three possible options for
biometric data storage repositories. (6 Marks)
f) Distinguish between genotypic and phenotypic characteristics in biometrics
(4 Marks)
QUESTION TWO
a) Discuss at least four issues to be considered under operational requirements when
integrating biometrics into an organization. (10 Marks)
b) Discuss at least five key factors used in the selection of a biometric device
installation. (10 Marks)
QUESTION THREE
a) As any other system and technology the biometric technology has its vulnerabilities..
Describe six types of defences that may be used to protect the system
(12 Marks)
b) Differentiate between the following biometric terms: (8 Marks)
i. Uni-biometric system
ii. Uni-modal biometric system
iii. Multi-biometric system
iv. Multimodal biometric system
QUESTION FOUR
a) As a biometrics technology expert discuss some of the challenges and issues to be
addressed in large-scale biometrics deployment (10 Marks)
b) A biometric system is implemented for use by people thus it is important to address
issues that can affect public acceptance of the system. Using examples discuss some
of the social issues raised by the use of biometrics technology (6 Marks)
c) Using examples differentiate between a type 1 and a type 2 error (4 Marks)
QUESTION FIVE
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 at least four of these
problems (4 Marks)
c) Briefly describe at least five features of a fingerprint scanner (5 Marks)
d) Describe some of the global features used in digital signature recognition (5 Marks)
