LEGALLY VALID UNDER THE IT ACT, 2000
Aadhaar eSign · DSC · OTP

eSign documents online — legally valid, in minutes.

Aadhaar OTP eSign, Digital Signature Certificate (DSC) and OTP signing — remote, paperless and recognised under the IT Act, 2000.

IOUX lets every party sign from their own phone, anywhere — no dongle, no print-outs, no in-person meeting. Aadhaar-based eSign is fast, secure and legally recognised in India, and every signature is captured with a tamper-evident audit trail and an advocate-certified, court-admissible execution report.

CERT-IN  ·  ISO 27001  ·  3 Patents  ·  IT Act 2000

How eSign works

Plays automatically · silent · loops

Why Aadhaar eSign

The easiest legally-valid signature in India.

Aadhaar-based eSign needs nothing but a phone and an OTP. It removes the cost and delay of physical signing while staying fully compliant.

  • No hardware token or dongle required
  • Every signer signs remotely, from any device
  • Legally recognised under the IT Act, 2000
  • Tamper-evident audit trail on every signature
  • Advocate-certified DDE report for evidence

Signing methods on IOUX

  • Aadhaar OTP eSign — fastest, phone-only
  • Digital Signature Certificate (DSC) — for authorised signatories
  • OTP-based signing for supported workflows
  • Multi-party signing with status tracking
  • Vernacular and WhatsApp-friendly signing journeys
More than a signature

Signing is one step — IOUX runs the whole chain.

Pair eSign with eKYC and e-stamp paper, and every document comes out execution-ready and court-admissible.

eKYC built in

Verify each signer’s identity before they sign.

e-Stamp included

The right stamp duty, affixed before signing.

Court-admissible proof

An advocate-certified DDE report with every execution.

eSign FAQ

Common questions

Yes. Aadhaar-based eSign is an electronic signature recognised under the Information Technology Act, 2000, and is widely used for agreements, KYC and lending documents across India.

No. Aadhaar OTP eSign needs only a phone and an OTP. A Digital Signature Certificate (DSC) is supported where an authorised signatory prefers it.

Yes. Each party receives a link, completes eKYC and signs from their own device — no in-person meeting required.

Every execution is accompanied by a tamper-evident audit trail and an advocate-certified Digital Document Execution (DDE) report that is court-admissible.

Wondering if an eSign really holds up?

See exactly how Aadhaar eSign is recognised under Indian law — and what makes a signed document court-admissible.

Related: eStamp Paper · eKYC · Create a Contract · Templates