Case Study 3: Security

Case Study 3:
Security

A large,
fast-food chain unveiled a new touch screen register for its franchises. Each
cashier was assigned a user id and password combination to log in to the
register. The system allowed the incorrect password to be entered four (4)
times before the register would lock and require a manager to unlock it with a
key card. To prevent unauthorized access, the registers would lock after three
(3) minutes if the screen was not touched. When the register locked, only the
cashier who was logged in prior to it locking could unlock it without a system
restart.
After a few days
in operation, restaurant managers started complaining about the amount of time
they were spending unlocking the registers. Some cashiers were forgetting their
user Id and password, so other cashiers would log in for them. It also seemed
that the button layout made it easy for the cashiers to key in the incorrect
password. The managers also complained that cashiers would leave for a break or
end their shift and forget to log out of the locked register. The managers
would have to reboot the system, a three to five (3-5) minute process in order
for the next cashier to log in. Additionally, managers noticed that grease was
building up on the touch screens, making them less responsive.

Write a five to
eight (5-8) page paper in which you:

Analyze the new system and determine the
design issues with this new system.
Describe how you would correct the design
issues with the system to make the restaurant managers happy.
Create a design plan that:

Lists and explains the tasks associated
with improving this interface.
Contains at least six (6) tasks.
Includes realistic time estimates for each
task to be completed.
Analyzes the development of the system in
your plan.
Analyzes the testing of the system in your
plan.
Analyzes the implementation of the system
in your plan.

Examine how this system balanced security
and usability, and explain the challenges of incorporating system security
and system usability into a design.
Suggest changes that could be made to the
security of this system to still meet security objectives but make the
system more usable.
Use Microsoft Visio or an open source
alternative, Dia, to create a graphical representation of your proposed
interface. Note: The graphically depicted solution is not included in the
required page length.
Use at least three (3) quality resources in
this assignment. Note: Wikipedia and similar Websites do not qualify as
quality resources.