Usability Evaluation of an Interactive System

Running head: USABILITY EVALUATION OF AN INTERACTIVE SYSTEM
USABILITY EVALUATION OF AN INTERACTIVE SYSTEM
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1USABILITY EVALUATION OF AN INTERACTIVE SYSTEM
Part 1: The interactive system and its users
The report aims at providing a usability case evaluation on the chosen interactive system. The
interactive system considered for this report is automatic train ticket vending machine. This is a ticket
vending machine that was developed with the aim of proving quick service towards the passenger.
The main user of this interactive system are the daily passenger travelling with train. This interactive
system will eradicate the need of waiting in a long queue. Passenger can buy their tickets by just
swapping the smart cards. The smart cards are generated as soon the vending machine are
implemented in the station. Each smart card are recharged based on the requirement of the passenger.
The major benefit of having a smart card is that unlike pass the smart cards can be accessed by any
member of the family. Once the smart cards balance gets over the passenger needs to recharge their
cards. The system was developed in the year 2007 by railway for reducing the waiting time of
passengers. This is a user friendly system and provides quick access over the tickets. The passenger
needs to swipe their smart cards for making payment. The system contains a large LCD screen which
shows the map with different stations, once the user selects the source station the system asks the user
to choose number of passenger travelling and finally the payment is processed. Apart from smart
cards the system also accepts cash and coins. Around half of the population travel daily by trains and
for them this system is a very efficient way of managing their time. The machine is incorporated with
GPS that helps in selecting the stations.

2USABILITY EVALUATION OF AN INTERACTIVE SYSTEM
Part 2: The use cases for the interactive system
The above diagram is the representation of use case diagram and is developed to understand
the usability of the interactive system. The actors associated with the usability of this interactive
system are passenger and the system. System is responsible for checking the information entered by
the users are valid or not and checks the balance of smart cards. Once the smart card is being analysed
with sufficient balance then the transaction is being processed. It is the responsibility of passenger to
select correct source station and make proper payment. After the source station is selected, the system