Understanding Aadhaar Numbers

An Aadhaar number is a 12-digit unique identity number issued by the Unique Identification Authority of India (UIDAI) to residents of India. It serves as a proof of identity and address throughout India.

The Importance of Aadhaar

Aadhaar has become an essential document in India, used for various purposes including:

• Opening bank accounts
• Filing tax returns
• Receiving government benefits
• Getting a mobile phone connection

Businesses across India are increasingly using Aadhaar validation to streamline their operations. Learn more about how businesses use Aadhaar validation to reduce costs and improve efficiency.

Structure of an Aadhaar Number

The 12-digit Aadhaar number follows a specific format:

• First digit: Never zero
• First 11 digits: Random numbers
• Last digit: Checksum using Verhoeff algorithm

Understanding the Aadhaar number format is crucial for implementing robust validation systems in your applications.

Verifying Aadhaar Numbers

It's important to verify Aadhaar numbers to prevent fraud and ensure accuracy. Our free Aadhaar validator tool helps you quickly check if an Aadhaar number is properly formatted and passes the checksum verification. For a detailed guide, see how to validate an Aadhaar number.

Privacy and Legal Considerations

When handling Aadhaar data, it's essential to understand your legal obligations and privacy responsibilities. Read our comprehensive guide on privacy and legal considerations when using Aadhaar data to ensure compliance with Indian data protection laws.