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Aadhaar QR Code Scanner: What It Stores & How to Scan It
The QR code is the square barcode printed on every Aadhaar whether it’s the letter the eAadhaar PDF the PVC card or the version in the app. It is not just a link or a serial number. It is a self-contained digitally signed copy of your core Aadhaar details that a scanner can read on the spot. Its purpose is offline verification: a service provider can confirm who you are by scanning it without going online or storing your full Aadhaar number. Because UIDAI signs it the code also works as a tamper check. In short it turns a printed card into something a machine can trust.
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Reviewed ByLast Updated: 2 July 2026
What Data is Stored in the Aadhaar QR Code
The current secure QR code holds a compact identity record but notably not your full Aadhaar number. Inside it are:
- Your name as printed on the Aadhaar
- Address gender and date of birth
- Only the last four digits of your Aadhaar number
- Your photograph
- UIDAI’s digital signature which locks all of the above
It does not contain your biometrics. No fingerprints or iris data are ever stored in the QR. Because only the last four digits appear scanning the code cannot expose your complete Aadhaar number which is a deliberate privacy safeguard.
Step-by-Step: How to Scan Aadhaar QR Code
Scanning works offline and takes seconds. Use only an official UIDAI tool and never a random QR app.
- Install the Aadhaar app or the Aadhaar QR Scanner app from the Play Store or App Store or UIDAI’s Windows QR reader on a PC
- Open the app and choose the QR Code Scanner option
- Allow camera access and hold the QR code steady in the frame
- Let the app read the code and validate UIDAI’s digital signature
- Read the name photo and details it displays once verification succeeds
A genuine code resolves cleanly and shows the photo. A blurry unreadable or signature-failing code is a warning sign.
Difference Between Old and New Aadhaar QR
Not every Aadhaar QR is equal. The older QR code carried only basic demographic text like name and address with no photo which made it weaker proof. The new Secure QR Code adds the photograph and UIDAI’s digital signature over the whole record so it is both richer and tamper-evident. A secure QR lets a verifier match the photo to the person and trust the data has not been edited while the old one could not. Newer Aadhaar downloads and PVC cards carry the secure version so if you are reissuing a card you get the stronger code automatically.
| Old vs New QR | Old QR | Secure QR (New) |
| Demographics | Yes | Yes |
| Photograph | No | Yes |
| Digital signature | No | Yes |
| Tamper-evident | No | Yes |
Is Aadhaar QR Code Encrypted and Safe
It is safe though the precise word is digitally signed rather than encrypted. Signing means the data is sealed against tampering: if anyone alters a single field the signature no longer matches and an official scanner rejects it. For your privacy the design helps in two ways since the QR omits your full Aadhaar number and all biometrics so even a successful scan reveals only what is already on the face of the card. The one real risk is using an unofficial scanner app which might copy what it reads. Stick to UIDAI’s tools. Scanning someone’s QR does not give a stranger access to your UIDAI account or biometrics.
Frequently Asked Questions (FAQs)
What information is stored in Aadhaar QR code?
The secure QR code holds your name address gender date of birth the last four digits of your Aadhaar number and your photograph all sealed by UIDAI’s digital signature. It does not contain your full Aadhaar number or any biometrics. Scanning it reveals only the basic identity details already printed on the card and nothing more sensitive.
How to scan Aadhaar QR code safely?
Use only an official UIDAI tool such as the Aadhaar app the Aadhaar QR Scanner app or UIDAI’s Windows QR reader. Open the scanner allow camera access and hold the QR steady until it validates the signature and shows the details. Avoid third-party QR apps which may not verify the signature and could copy what they read.
Is Aadhaar QR code encrypted?
More precisely it is digitally signed by UIDAI rather than encrypted. The signature seals the data so that any tampering breaks it and an official scanner rejects the code. This is what makes the QR tamper-evident and trustworthy for offline verification which is why only official UIDAI scanners should be used to read it.
Can anyone access my data via QR?
Only the limited details the QR already holds which are name address gender date of birth last four digits and photo and only if they scan the physical code with a reader. It does not expose your full Aadhaar number your biometrics or your UIDAI account. A casual scan cannot unlock anything sensitive though you should still share your Aadhaar only when genuinely needed.
What is the difference between old and new Aadhaar QR?
The old QR carried only demographic text with no photo and was not digitally signed. The new secure QR code adds your photograph and UIDAI’s digital signature over the whole record making it both richer and tamper-evident. The secure version lets a verifier match the photo to you and trust the data is unaltered which the old code could not support.
How to verify Aadhaar using QR?
Scan the QR with an official UIDAI app. It validates UIDAI’s digital signature and displays the holder’s photo and details. If the signature checks out and the photo matches the person the Aadhaar is genuine. If the scan fails or the details differ from the printed card treat it as suspect. This is the most reliable offline authenticity check available.
Which app to use for Aadhaar QR scanning?
Use the official Aadhaar app or the dedicated Aadhaar QR Scanner app both by UIDAI on Android or iOS or UIDAI’s Windows QR reader on a computer. Check that the developer is listed as UIDAI before installing. Avoid generic QR scanner apps as they cannot validate UIDAI’s digital signature and may not read the secure QR correctly.
Is QR code same on all Aadhaar types?
The secure QR works the same way across every form of Aadhaar whether the paper letter the eAadhaar PDF the PVC card or the app. All carry the same signed data and photo. The only difference you may come across is an older card still showing the earlier unsigned QR. Reissuing or re-downloading your Aadhaar gives you the current secure version.
