🪪This is my Id validator web application

🆔 Iranian National ID Validator

A simple Python project to validate Iranian National Identification Numbers based on the official checksum algorithm. This project is implemented using Object-Oriented Programming (OOP) principles.

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✅ Features

• Checks if the entered National ID is exactly 10 digits
• Ensures the input contains only numeric characters
• Rejects invalid IDs with all identical digits (e.g., 1111111111)
• Implements the official checksum algorithm used for validation
• Clean and readable structure using Python classes

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📦 Requirements

• Python 3.x

All libraries used are from Python’s standard library, so no additional packages are required.

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🔢 Validation Algorithm

1. The ID must be a 10-digit number.

2. All digits cannot be the same.

3. Compute the checksum as follows: checksum = (10×digit1 + 9×digit2 + ... + 2×digit9) % 11

4. Then:

• If checksum < 2, it must be equal to the 10th digit.
• If checksum >= 2, then 10th digit = 11 - checksum.

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🎨UI

👨‍💻Used Technologies

• streamlit
• python