ATM Withdrawal System (Banking Security)

Business Scenario

You are hired as a Software Developer Intern at a leading bank. The bank is developing a secure ATM machine system that allows customers to withdraw money safely.

Due to increasing fraud cases, the bank wants a system that:

  • Verifies the customer PIN's

  • Checks if the account has sufficient balance

  • Ensures secure and accurate transactions

Your task is to build a basic ATM withdrawal system using decision-making (if-else conditions) similar to real banking machines.

Pre-Lab Preparation

Topic : Python Fundamentals for Cybersecurity

1)Introduction to Python for Cybersecurity.

2)Python basics(Variable, Datatypes, Operators, Conditional statements, loops, function)

Practical Code

correct_pin = 1234
balance = 5000
pin = int(input("Enter your PIN: "))
amount = float(input("Enter withdrawal amount: "))
if pin == correct_pin:
   if amount <= balance:
       print("Transaction Successful")
       print("Remaining Balance:", balance - amount)
   else:
       print("Insufficient Balance")
else:
   print("Incorrect PIN")

Output

Great job!
You have successfully completed your lab on ATM Withdrawal System using Decision-Making Statements.

In this lab, you have: understood how ATM systems verify customer PINs, learned the importance of balance validation in banking applications, performed secure transaction checks using if-else conditions, explored decision-making logic in real-time banking systems, and built a basic ATM withdrawal system for secure and accurate transactions.

Checkpoint

Next-Lab Preparation

Topic : Python Fundamentals for Cybersecurity

1)Introduction to Python for Cybersecurity.

2)Python basics(Variable, Datatypes, Operators, Conditional statements, loops, function)