Use Case For ATM Support William Nagy

Use Case For Atm Supportuse Case For Atm Supportwilliam Nagystrayer Un

Describe a use case, complete with typical and alternate courses, that documents the event of a bank customer withdrawing money from an ATM. This use case describes how the Bank Customer uses the ATM to withdraw money from his/her bank account. The actors are the bank customer and the bank. Preconditions include: (1) There is an active network connection to the Bank. (2) The ATM has cash available.

The basic flow of events is as follows: (1) The customer inserts their bank card; (2) User validation is performed; (3) The ATM displays available options, with the customer selecting “Withdraw Cash”; (4) The ATM prompts for an account; (5) The customer selects an account; (6) The ATM prompts for an amount; (7) The customer enters an amount; (8) Card ID, PIN, amount, and account are sent to the bank as a transaction; (9) The bank replies with approval or denial; (10) Money is dispensed; (11) The card is returned; (12) receipt is printed; and (13) the use case ends successfully.

Alternate flows include situations such as invalid user validation, wrong account selection, incorrect amount entry, exceeding withdrawal limits (per transaction or daily limit), or insufficient cash in the ATM. For example, if user validation fails, the process ends with failure. If an account does not match the card, the ATM displays "Invalid Account" and prompts to retry. If the amount entered is invalid or not a multiple of available bills, the customer is asked to re-enter. If the amount exceeds limits or cash availability, appropriate warnings are issued, and re-entry is prompted.

Similarly, the use case for deposit and transfer transactions involve selecting transaction types, choosing accounts, entering amounts, and processing approval or rejection. Deposit transactions include inserting an envelope with cash/checks, and the bank approves or disapproves based on PIN validation and envelope acceptance within a time window. Transfer transactions involve moving funds between accounts, with approval or rejection based on PIN validation and account statuses.

An ethical issue associated with the ATM system is the potential for system errors or malfunctions, which can impact customer convenience and trust. Customers value the ability to access funds without long waits; however, system outages or errors may lead to frustration, potentially leading to financial loss or security breaches.

Paper For Above instruction

The effective functioning of Automated Teller Machines (ATMs) is pivotal in modern banking, offering customers convenience and 24/7 access to banking services. Developing comprehensive use cases for ATM operations helps in understanding user interactions, system responses, and identifying potential issues that can impact user experience and system security. This paper explores the use case of cash withdrawal, deposit, and transfer, analyzing typical and alternate flows, dependencies, and ethical considerations.

Introduction to ATM Use Cases

The ATM use case begins with the bank customer inserting their card, which initiates user validation through PIN verification. Once validated, the customer navigates through options such as cash withdrawal, deposit, or transfer. This process involves multiple steps including account selection, amount entry, transaction approval, and receipt printing. Each step is associated with potential errors or exceptions that must be handled to maintain system integrity and customer satisfaction.

Cash Withdrawal Use Case

The primary use case for cash withdrawal involves the customer selecting withdrawal, choosing the account (checking or savings), and entering the amount. The system transmits relevant details to the bank for authorization. Upon validation, the ATM dispenses cash, returns the card, and prints a receipt. However, several alternate flows can occur:

• Invalid User Validation: If user validation fails, the transaction terminates.
• Wrong Account Selection: If the account does not match, an error message prompts re-selection.
• Invalid Amount Entry: If the amount is invalid or not a multiple of bills available, re-entry is required.
• Exceeds Limits: If the withdrawal exceeds per-transaction or daily limits, the ATM displays warnings and requests re-entry.
• Insufficient Cash: If the ATM lacks sufficient cash, the transaction is aborted with appropriate messaging.

This robust handling ensures that the transaction only completes when successful, with internal logs reflecting the updated cash balance and transaction history.

Deposit Transaction Use Case

Depositing funds involves selecting deposit, choosing the account, and entering the amount. The customer inserts an envelope containing cash or checks. The system sends necessary details to the bank for approval. If approved, the deposit is accepted; otherwise, failure paths such as incorrect PIN or timeout are managed through specific extensions. Post-deposit, the bank manually verifies envelope contents, and may credit the account accordingly. This process ensures secure handling of physical deposits, linked with digital transaction records.

Account Transfer Use Case

The transfer process requires selecting transfer, choosing "from" and "to" accounts, and entering the amount. These details are transmitted to the bank for approval. Upon approval, the system issues a receipt, and internal logs reflect the transfer. If PIN validation or other issues occur, appropriate rejection processes are initiated. Transfers are critical in managing customer funds, requiring secure and reliable implementation.

Ethical Considerations

One significant ethical concern involves system failures or errors leading to customer inconvenience or financial loss. Since customers rely heavily on ATM availability, system malfunctions can undermine trust. Additionally, data security and privacy issues are paramount; stolen card information or transaction interception pose risks. Transparent communication, robust security protocols, and continuous system maintenance help mitigate these ethical challenges and uphold customer confidence.

Conclusion

Developing detailed and well-structured use cases for ATM services enhances understanding of system requirements, user interactions, and exception handling. Properly addressed, these use cases ensure reliable, secure, and user-friendly banking experiences. Ethical issues, particularly system reliability and data security, must be proactively managed to sustain public trust and provide seamless service.

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