Problem Statement:
The physical layout of an ATM consists of a screen with a key pad, a slot for insertion of card, a receipt printer and a cash dispenser. When ATM is used, the user must insert his card into the machine. To make it easy to use, a welcome note is displayed with audio message for each operation. In order to grant user access to his account information, ATM machine asks him to enter his pin number. When the correct pin number is entered, the various account options are given to the user such as balance inquiry, deposit, withdrawal, transfers etc. The user can select the desired option by selecting it with the buttons provided.
A User enters the Booth of the ATM and selects the option of cash withdrawal, Machine processes on the request and ejects the card first and then cash to avoid any error by the human. Usually an action is followed by a new screen with options, and user is re-directed to main screen after completion of desired action. When the user is finished using the ATM, the user’s card is ejected and the access to the account in closed.
You need to answer the following:
ü Map the extended Human processing model on ATM (Automatic teller Machine) in your words.
ü Why card is ejected before the transaction amount provided to user? Justify your answer in context of memory.
ü What can be the possible steps taken to focus the attention of the user during using ATM.
ü Suggest a conceptual model with more advanced features to the handicap users (i.e. Blind )
ü Suggest some other authentication mechanism other than entering pin code.
ü Highlight the disadvantages of poor understanding about the ATM system.
/****************** Assignment No. 2 : Solution **********************\
Map the extended Human processing model on ATM (Automatic teller Machine) in your words.
- A person enters the Booth of the ATM, Card is inserted in the slot on the ATM and Machine accepts the card and pulls it inside.
- Machine displays a welcome note that is stored in memory on getting the card. All the actions that are being performed by the machine are done after browsing the information stored in the memory of the ATM.
- Code is entered on the demand of Machine which is compared to the user’s code saved in his database; ATM also compares the pin code and amount to the transaction to the amount in the account. (By Memory browsing). ATM tells the possible results by executing response on the request. User responds and confirms the transaction, in response execution ATM requests the user to receive his card then the money is given to the user.
Why card is ejected before the transaction amount provided to user? Justify your answer in context of memory.
Here the concept of Short term memory arises. Card is ejected before the transaction amount because in short term memory one quickly forgets things.
If cash is given before the card one may forget the card inside the ATM by considering that his task has been completed.
What can be the possible steps taken to focus the attention of the user during using ATM.
To focus the attention of the user following steps can be taken
- The both where ATM is placed should be sound proof so that external noises could not disturb.
- Audio system should be introduced to welcome and brief the actions about “how to use” the ATM.
- The Buttons should be properly labeled.
- Proper graphics should be used for every action with voice commands which will help user to follow actions confidently.
- Not all current ATMs can support multiple-languages. Considering growing international trade and communication, multiple language support would be a very important feature.
- Blinking lights in card slots and money slots etc.
Suggest a conceptual model with more advanced features to the handicap users (i.e. blind)
- For every action there should be Voice messages.
- To make it easy for blind users to use the key pad of ATM Brail Keypad should be used.
- Voice recognition interfaces should be provided so that blind one could perform their desired actions with Voice Commands.
Suggest some other authentication mechanism other than entering pin code.
There are many new things can be included to the ATM instead of the traditional pin code method:
- Biometric Authentication (finger prints etc.),
- Retina scanner,
- Face recognition,
Highlight the disadvantage of poor understanding about the ATM system.
The Researchers have tried to make ATM machines more simple and user friendly so that every person could use it. However, if someone is unable to understand the ATM machine mechanism the following things could happen to him:
- Card sticking in the slot,
- Unintended and unintentional transactions can result in money lost, overhead charges etc.
- Inserting wrong pin could result in card block, or account block,
- Time consumption on erroneous and repetition can also be a very valid disadvantage.
- Having poor understanding of ATM system user may transfer his/ her money to the wrong accounts whether inter/ intra banks
- User might block the ATM system with wrong insertion of ATM cards
/****************** Assignment No. 2 : Solution **********************\