Add User Authentication (Login and Signup) to Expense Tracker

[Parvathy-pp]

📌 Description

Currently, the Expense Tracker does not have any user authentication system. All expenses are stored without associating them with a specific user.

This means multiple users cannot securely manage their own expenses separately.

Adding authentication will make the application more secure and realistic.

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🎯 Expected Solution

Implement a user authentication system with:

• User Signup
• User Login
• User Logout

Each user should:

• Have their own account
• See only their own expenses

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💡 Suggested Implementation

Frontend:

• Create Login page
• Create Signup page
• Store login session

Backend / Storage:

• Store user credentials securely
• Link expenses to logged-in user

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🚀 Benefits

• Improves security
• Supports multiple users
• Makes application production-ready
• Adds professional functionality