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  • Start eSigning today and experience a 100% digital, paperless workflow.

Digital Signature with Aadhaar eSign & OTP eSign

Sign documents online in minutes  with Aadhaar eSign or OTP eSign.
  • Built for both businesses and individuals, our platform helps you
    eliminate paperwork, accelerate approvals, and sign from anywhere.
  • Secure
  • Legally Compliant
  • 100% digitally

Quick Process

1-2 min

All States

Valid Across India

Fast Approvals

Accelarate

Start eSign Now
ChatGPT Image Aug 6, 2026, 12_32_09 PM
  • Paperless Workflow
  • Faster Approvals
  • Sign from Anywhere
  • Identity Verified
100% Secure, Fast & Legally Valid

Digital Signature with Aadhaar & OTP eSign

Sign documents online in minutes with Digital Signatures, Aadhaar eSign, or OTP eSign. Secure, legally compliant, and built for both businesses and individuals, our platform helps you eliminate paperwork, accelerate approvals, and sign from anywhere.

IT Act 2000

Legally Valid

256-Bit SSL

Bank Security

UIDAI Approved

Aadhaar eKYC

Start eSign Now Explore Methods
L
LEGALDESK
DIGITAL DOCUMENTS
✓ 256-BIT ENCRYPTED
TENANCY CONTRACT PREVIEW

Residential Rental Agreement

This Agreement is made between the Lessor and Lessee for premises located in Bengaluru, Karnataka. Both parties agree to the terms and conditions outlined in this document.

AUTHORISED DIGITAL SIGNATURE
✓ Aadhaar eSign
Rajesh Kumar
AADHAAR-OTP-9821 · 23 OCT 2026
Digitally authenticated signature ✓ VERIFIED
✓ VERIFIED COMPLIANT LEGALDESK
✓
Legally Binding
IT Act 2000 Compliant
RK
Rajesh Kumar
Verified Signer
SIGNING METHOD
SIGNATURE STYLE
4.8/5
Based on 12,000+ Reviews
Google

Documents created

1M+

of Trust and Commitment

10+ Years

Happy Customers

50,000+

Understanding Digital Signatures

What is a Digital Signature?

A Digital Signature is a secure electronic method of signing documents online. It verifies the signer’s identity and ensures that the document has not been altered after signing.

Unlike handwritten signatures, digital signatures use encryption and authentication technologies, making them legally valid under the Information Technology (IT) Act, 2000.

View full Template Draft
01

Aadhaar eSign

Authenticate using Aadhaar OTP or biometric verification.

02

OTP eSign

Sign documents using a One-Time Password sent to the registered mobile number.

Both methods are legally valid, highly secure, and suitable for personal as well as business use.

Choose Your Mode

How LegalDesk Simplifies Digital Signature

Compare Aadhaar eSign vs OTP eSign for your specific requirements.
Simple 4-Step Process

How LegalDesk Simplifies Digital Signature

Signing documents online with LegalDesk is quick and easy — it takes only four simple steps:

Why Choose LegalDesk eSign?

Every eSign complies with India’s IT Act, 2000 and applicable regulations.

100% Legally Valid

Your documents are secured with 256-bit SSL encryption and end-to-end security.

Secure & Encrypted

Sign documents digitally—no printing, scanning, or courier required.

Paperless Workflow

Digital workflows reduce costs and support eco-friendly practices.

Lesser Costs

Every signed document includes a tamper-proof audit trail with timestamps.

Audit Trail

Broad Application

Where Can Digital Signatures Be Used?

Our Digital Signature and Aadhaar eSign solutions are widely used across industries.

Contracts & Agreements

Employment agreements, vendor contracts, NDAs, partnership agreements, rental agreements, and lease contracts.

Banking & Finance

Loan applications, account opening forms, KYC documents, customer onboarding, and financial approvals.

HR & Payroll

Offer letters, employee onboarding, salary documents, policy acknowledgements, and exit formalities.

Real Estate

Rental agreements, sale agreements, property documents, lease renewals, and brokerage contracts.

Government & Compliance

Applications, statutory filings, tenders, declarations, and regulatory submissions.

Built for Every Business

Designed for Individuals, Startups, SMEs, Enterprises, Banks & NBFCs, Insurance Companies, and Institutions.

Contracts & Agreements

Employment agreements, vendor contracts, NDAs, partnership agreements, rental agreements, and lease contracts.

Government & Compliance

Applications, statutory filings, tenders, declarations, and regulatory submissions.

Banking & Finance

Loan applications, account opening forms, KYC documents, customer onboarding, and financial approvals.

Built for Every Business

Designed for Individuals, Startups, SMEs, Enterprises, Banks & NBFCs, Insurance Companies, and Institutions.

HR & Payroll

Offer letters, employee onboarding, salary documents, policy acknowledgements, and exit formalities.

Real Estate

Rental agreements, sale agreements, property documents, lease renewals, and brokerage contracts.

How Does Aadhaar & OTP eSign Benefit You?

Using Digital Signature technology helps businesses improve efficiency while providing a better customer experience.
  • UIDAI-based authentication
  • Legally valid under IT Act, 2000
  • No physical signature required
  • Instant document completion
  • Highly secure biometric or OTP verification
Trusted by Every Industry

Built for Every Business

LegalDesk eSign solutions are designed for individuals, startups, SMEs, and enterprises. From a single document to thousands every day, our platform scales effortlessly for individuals and enterprises alike.
Individuals Startups SMEs Enterprises Banks & NBFCs Insurance Companies Real Estate Firms Educational Institutions Government Organizations
Clear Doubts

Frequently Asked Questions

Everything you need to know about Aadhaar-based eSign, OTP verification, the signing process, and digital signatures.

What is a Digital Signature?

A Digital Signature is an electronic way to sign documents securely. It verifies the identity of the signer using encryption technology and ensures the document cannot be altered after signing. In India, digital signatures are legally recognised under the Information Technology Act, 2000.

What is Aadhaar eSign?

 

Aadhaar eSign is a government-approved electronic signature service that allows users to sign documents digitally using their Aadhaar number. Authentication is completed through Aadhaar OTP or biometric verification, making the signing process quick, secure, and legally valid.

What is OTP eSign?

OTP eSign is a digital signing method where the signer verifies their identity using a One-Time Password (OTP) sent to their registered mobile number. It offers a fast and convenient way to sign documents remotely without requiring physical paperwork.

Is Aadhaar eSign legally valid in India?

 

Yes. Aadhaar eSign is legally valid under the Information Technology Act, 2000. It is recognised as a valid electronic signature and is widely accepted by businesses, financial institutions, and government organisations for eligible digital transactions.

What is the difference between Aadhaar eSign and OTP eSign?

Both methods enable users to sign documents electronically, but they use different authentication methods.

 

Aadhaar eSign

• Uses Aadhaar OTP or biometric authentication

• UIDAI-based identity verification

• Suitable for regulated and high-value transactions

• Highly secure identity authentication

OTP eSign

• Uses mobile OTP authentication

• Mobile number verification

• Ideal for quick business approvals and everyday agreements

• Fast and convenient remote signing

What documents can I sign using Digital Signature?

You can use Digital Signature, Aadhaar eSign, or OTP eSign for various documents, including:

  • Rental Agreements
  • Employment Contracts
  • Non-Disclosure Agreements (NDAs)
  • Vendor Agreements
  • Loan Documents
  • Banking Forms
  • Insurance Forms
  • HR Documents
  • Customer Consent Forms
  • Government Applications
  • Property Documents

Is eSign secure?

Yes. LegalDesk uses enterprise-grade security to protect every document. Our platform includes:

  • 256-bit SSL Encryption
  • Secure OTP Authentication
  • Aadhaar Verification
  • Tamper-proof Audit Trail
  • Encrypted Document Storage
  • Time-stamped Signature Records

These security measures ensure your documents remain authentic, confidential, and legally valid.

How long does it take to complete an eSign?

Most documents can be signed in less than two minutes. Simply upload the document, verify the signer, complete Aadhaar or OTP authentication, and the signed document is instantly available for download.

Can I sign documents from my mobile phone?

Yes. LegalDesk supports mobile, tablet, laptop, and desktop devices. You can upload documents, authenticate using Aadhaar or OTP, and complete your eSign from anywhere, anytime.

Who can use Digital Signature services?

LegalDesk's Digital Signature solution is suitable for:

  • Individuals
  • Freelancers
  • Startups
  • MSMEs
  • Enterprises
  • Banks & NBFCs
  • Insurance Companies
  • Educational Institutions
  • Healthcare Providers
  • Government Departments

Whether you need to sign one document or thousands, our platform scales to your requirements.

Go Paperless — eSign Documents Securely in Minutes

Upload your document, verify the signer, authenticate securely, and receive a legally valid signed document — anytime, anywhere.
Your Digital Signing Journey Starts Here
  • Start eSigning today and experience a 100% digital, paperless workflow.

Digital Signature with Aadhaar eSign & OTP eSign

Sign documents online in minutes  with Aadhaar eSign or OTP eSign.
  • Built for both businesses and individuals, our platform helps you
    eliminate paperwork, accelerate approvals, and sign from anywhere.
  • Secure
  • Legally Compliant
  • 100% digitally

Quick Process

1-2 min

All States

Valid Across India

Fast Approvals

Accelarate

Start eSign Now
  • Paperless Workflow
  • Faster Approvals
  • Sign from Anywhere
  • Identity Verified

What is a Digital Signature?

A Digital Signature is a secure electronic method of signing documents online. It verifies the signer’s identity and ensures that the document has not been altered after signing. Unlike handwritten signatures, digital signatures use encryption and authentication technologies, making them legally valid under the Information Technology (IT) Act, 2000.

Aadhaar eSign

Authenticate using Aadhaar OTP or biometric verification.

OTP eSign

Sign documents using a One-Time Password sent to the registered mobile number.

Aadhaar eSign

Authenticate using Aadhaar OTP or biometric verification.

OTP eSign

Sign documents using a One-Time Password sent to the registered mobile number.

Which Is The
Ideal eSign Method For You?

Choose the eSign method thatfits you needs. Secure, simple and legally valid.

Aadhaar eSign

Aadhaar eSign enables users to digitally sign documents using their Aadhaar number. Authentication is completed through OTP or biometric verification provided by UIDAI-authorized service providers.
  • Ideal for:
  • Legal agreements
  • Banking and financial documents
  • Government forms
  • HR documents
  • Loan applications
  • Insurance paperwork
  • Benefits:
  • UIDAI-based authentication
  • Legally valid under IT Act, 2000
  • No physical signature required
  • Instant document completion
  • Highly secure biometric or OTP verification

OTP eSign

OTP eSign allows users to sign documents using a One-Time Password sent to their registered mobile number. It is one of the fastest ways to complete agreements remotely without additional hardware.
  • Ideal for:
  • Vendor contracts
  • Rental agreements
  • Sales contracts
  • Employee onboarding
  • Business approvals
  • Customer consent forms
  • Benefits:
  • Sign from any device
  • Instant OTP verification
  • Quick document turnaround
  • Easy for multiple signers
  • Completely paperless

Which Is The
Ideal eSign Method For You?

Choose the eSign method thatfits you needs. Secure, simple and legally valid.

Aadhaar eSign

Aadhaar eSign enables users to digitally sign documents using their Aadhaar number. Authentication is completed through OTP or biometric verification provided by UIDAI-authorized service providers.
  • Ideal for:
  • Legal agreements
  • Banking and financial documents
  • Government forms
  • HR documents
  • Loan applications
  • Insurance paperwork
  • Benefits:
  • UIDAI-based authentication
  • Legally valid under IT Act, 2000
  • No physical signature required
  • Instant document completion
  • Highly secure biometric or OTP verification

OTP eSign

OTP eSign allows users to sign documents using a One-Time Password sent to their registered mobile number. It is one of the fastest ways to complete agreements remotely without additional hardware.
  • Ideal for:
  • Vendor contracts
  • Rental agreements
  • Sales contracts
  • Employee onboarding
  • Business approvals
  • Customer consent forms
  • Benefits:
  • Sign from any device
  • Instant OTP verification
  • Quick document turnaround
  • Easy for multiple signers
  • Completely paperless

Which Is The
Ideal eSign Method For You?

Choose the eSign method thatfits you needs. Secure, simple and legally valid.

Aadhaar eSign

Aadhaar eSign enables users to digitally sign documents using their Aadhaar number. Authentication is completed through OTP or biometric verification provided by UIDAI-authorized service providers.

Ideal for:

Legal Agreements Government Forms HR Documents Loan Applications Banking and Financial Documents
  • Benefits:
  • UIDAI-based authentication
  • Legally valid under IT Act, 2000
  • No physical signature required
  • Instant document completion
  • Highly secure biometric or OTP verification

OTP eSign

OTP eSign allows users to sign documents using a One-Time Password sent to their registered mobile number. It is one of the fastest ways to complete agreements remotely without additional hardware.

Ideal for:

Vendor Contracts Rental Agreements Sales Contracts Employee Onboarding Business Approvals Customer Consent Forms
  • Benefits:
  • Sign from any device
  • Instant OTP verification
  • Quick document turnaround
  • Easy for multiple signers
  • Completely paperless

How LegalDesk Simplifies Digital Signature

Signing documents online with LegalDesk is quick and easy — it takes only four simple steps:
1

Upload Your Document

Upload documents in PDF, DOC, or DOCX format.

2

Choose Your Preferred eSign Method

Enter the signer's details, choose either Aadhaar eSign or OTP eSign, and verify the signer's identity.

3

Authenticate

Complete authentication using Aadhaar OTP, biometric verification, or mobile OTP.

4

Get Your Signed Document

The document is digitally signed instantly and securely delivered to all parties.

Where Can Digital Signatures Be Used?

Our Digital Signature and Aadhaar eSign solutions are widely used across industries.

Employment agreements, vendor contracts, NDAs, partnership agreements, rental agreements, and lease contracts.

Contracts & Agreements

Loan applications, account opening forms, KYC documents, customer onboarding, and financial approvals.

Banking & Finance

Offer letters, employee onboarding, salary documents, policy acknowledgements, and exit formalities.

HR & Payroll

Rental agreements, sale agreements, property documents, lease renewals, and brokerage contracts.

Real Estate

Applications, statutory filings, tenders, declarations, and regulatory submissions.

Government & Compliance

Built for Every Business

LegalDesk eSign solutions are designed for:

Individuals

Startups

SMEs

Enterprises

Banks &
NBFCs

Insurance
Companies

Real Estate
Firms

Educational
Institutions

Government
Organizations

Secure, Compliant & Future-Ready

Security is at the heart of every Digital Signature transaction.Our platform includes:

Bank level security for all data and documents

256-bit SSL
Encryption

Encrypted storage with strict access controls.

Secure Document Storage

Two-factorauthentiction for maximum security.

OTP & Aadhaar Authentication

Complete tracking with timestamps, signer records.

Tamper-proof Audit
Trail

Your data stays safe within India.

Data Hosted in
India

Sign anytime, anywhere on any device.

Multi-device
Support

Seamless integration for high-volume workflows.

Bulk eSign API Integration

High availabilty, scalability, and 100% uptime.

Enterprise-grade Infrastructure

Secure, Compliant & Future-Ready

Security is at the heart of every Digital Signature transaction.Our platform includes:

Bank level security for all data and documents

256-bit SSL Encryption

Encrypted storage with strict access controls.

Secure Document Storage

Two-factorauthentiction for maximum security.

OTP & Aadhaar Authentication

Complete tracking with timestamps, signer records.

Tamper-proof Audit Trail

Your data stays safe within India.

Data Hosted in India

Sign anytime, anywhere on any device.

Multi-device Support

Seamless integration for high-volume workflows.

Bulk eSign API Integration

High availabilty, scalability, and 100% uptime.

Enterprise-grade Infrastructure

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