Frequently Asked Questions about Aadhaar Validation and Verification

Our validator uses the Verhoeff algorithm, the same checksum algorithm used by UIDAI, to validate the mathematical integrity of an Aadhaar number. This works by checking that the last digit of the number (the checksum) correctly validates against the rest of the number according to a specific formula.

The validation process follows these steps:

1. We first check if the input is exactly 12 digits long
2. We verify that the number doesn't contain all zeros or all ones (invalid patterns)
3. We apply the Verhoeff algorithm to check the mathematical validity of the number
4. We provide instant feedback on whether the number passes these checks

It's important to note that our validator only checks if the number is mathematically valid according to the Verhoeff algorithm. It cannot verify if the number has actually been issued by UIDAI or if it belongs to a specific individual.

Absolutely. This tool performs all validation entirely within your browser. The Aadhaar number you enter is never sent to our servers or stored anywhere. This client-side processing ensures complete privacy and security of your sensitive information.

Here's how we ensure your data remains private and secure:

• All validation logic runs entirely in JavaScript on your device
• No data is transmitted over the internet during validation
• We don't use cookies or any other tracking mechanisms to store your Aadhaar number
• The "Hide Number" feature allows you to mask your Aadhaar number while typing for additional privacy
• The page automatically clears the input field when you refresh or navigate away

We take data privacy extremely seriously, especially when it comes to sensitive identification numbers like Aadhaar. Our tool is designed with a "privacy-first" approach where no personal data ever leaves your device.

Validating an Aadhaar number is useful in many situations, such as when collecting customer information for KYC purposes, verifying employee details, or ensuring the number provided to you is at least correctly formatted before proceeding with official verification.

Common use cases for Aadhaar validation include:

• Form Validation: Ensuring that users enter a mathematically valid Aadhaar number in online forms
• Data Entry Verification: Catching typographical errors when manually entering Aadhaar numbers into systems
• Initial Screening: Performing a basic check before proceeding with more comprehensive verification processes
• Educational Purposes: Understanding how the Verhoeff algorithm works for academic or development purposes

While our validator cannot confirm if an Aadhaar number is officially registered or active, it can save time and resources by identifying obviously invalid numbers before they enter your systems or workflows.

No, this is not an official UIDAI (Unique Identification Authority of India) service. This is an independent tool that implements the publicly documented Verhoeff algorithm used for Aadhaar validation.

Important distinctions between our tool and official UIDAI services:

• Our tool only validates the mathematical format of an Aadhaar number
• We cannot verify if a number is actually registered in the UIDAI database
• We cannot authenticate the identity of an Aadhaar holder
• We do not provide any official verification services

For official verification and authentication services, you should visit the official UIDAI website or use their authorized verification services.

Our tool is provided as a free utility for basic validation purposes only and is not affiliated with, endorsed by, or connected to UIDAI or any government organization.

The Verhoeff algorithm used in our validator is specifically designed to catch the most common types of errors that occur when handling identification numbers. It can detect:

• Single-digit errors: When any single digit in the number is incorrect
• Adjacent transposition errors: When two adjacent digits are swapped (e.g., typing "12" instead of "21")
• Twin errors: When a digit is incorrectly doubled (e.g., typing "22" instead of "23")
• Jump transpositions: When digits separated by one position are swapped
• Phonetic errors: Common mistakes made when numbers are verbally communicated

Additionally, our validator also checks for:

• Incorrect length (must be exactly 12 digits)
• Invalid patterns (e.g., all zeros or all ones)
• Non-numeric characters in the input

This makes our validator extremely effective at catching the most common data entry and transcription errors that might occur when handling Aadhaar numbers.