Enable signers to electronically sign documents using their Aadhaar identity and OTP verification. Recognized under the Information Technology Act 2000, Section 3A as legally equivalent to handwritten signatures.
Aadhaar eSign is a government-authorized electronic signature service that allows any Aadhaar holder to digitally sign documents using OTP-based authentication. It leverages India's Aadhaar biometric infrastructure managed by UIDAI to verify the signer's identity in real-time.
When a signer initiates an Aadhaar eSign, an OTP is sent to the mobile number linked to their Aadhaar. Upon successful verification, a digital certificate is generated and attached to the document, making it legally valid under the Information Technology Act 2000.
Unlike traditional Digital Signature Certificates (DSCs) that require physical USB tokens, Aadhaar eSign is entirely paperless and remote — signers can sign from anywhere using just their Aadhaar number and registered mobile phone.
Uses India's Aadhaar biometric system for signer verification
One-time password sent to Aadhaar-linked mobile number
Cryptographic certificate attached to the signed document
Any modification after signing invalidates the signature
A simple 4-step process to get legally valid electronic signatures using Aadhaar.
Upload your document to FlowVerify and add signature fields where signatures are required.
The signer enters their 12-digit Aadhaar number on the secure signing page.
An OTP is sent to the mobile number linked to the signer's Aadhaar. The signer enters the OTP to verify identity.
A digital certificate is generated and attached to the document. The signed document is legally valid.
Aadhaar eSign is a legally recognized electronic signature method under Indian law.
Section 3A of the Information Technology Act 2000 recognizes electronic signatures that use techniques specified by the Central Government. Aadhaar eSign is a notified technique under this section, making signatures executed via Aadhaar eSign legally valid and enforceable in Indian courts.
Under the IT Act, electronic signatures applied via Aadhaar eSign have the same legal standing as handwritten signatures on paper documents. Courts in India accept Aadhaar-eSigned documents as valid evidence, provided the audit trail and digital certificate are intact.
The Aadhaar eSign service is authorized by the Controller of Certifying Authorities (CCA), Government of India. The identity verification is performed by UIDAI (Unique Identification Authority of India), the government body responsible for Aadhaar. This provides a highly trusted and standardized method of identity verification for electronic signing.
Every Aadhaar eSign transaction generates a complete audit trail including signer identity (masked Aadhaar), timestamp, IP address, and digital certificate details. This tamper-proof record serves as evidence of the signing event and can be presented in legal proceedings.
Aadhaar eSign is built with multiple layers of security to protect signer identity and document integrity.
Signer identity is verified directly by UIDAI through the Aadhaar OTP mechanism. No third party has access to biometric data.
FlowVerify does not store Aadhaar numbers or biometric information. Only a masked reference and the digital certificate are retained for the audit trail.
Each Aadhaar eSign transaction receives a time-stamped digital certificate that cryptographically binds the signer to the document at the exact time of signing.
Aadhaar eSign is ideal for any document that requires legally valid signatures from individuals in India.
Offer letters, NDAs, employment contracts, policy acknowledgements, and employee onboarding documents.
Property rental agreements, lease contracts, and housing society documents.
Loan applications, KYC forms, insurance policies, and financial service agreements.
Vendor agreements, partnership deeds, service-level agreements, and procurement documents.
Statutory declarations, consent forms, compliance certifications, and regulatory filings.
Enrollment forms, consent for medical procedures, academic agreements, and institutional paperwork.
Get legally valid electronic signatures powered by Aadhaar. Sign up for a Business plan to get started.