User
The user is the person who wants to sign a document digitally. They start the eSign process through a website or app. Their identity must be verified before the signature is applied.
ASP (Application Service Provider)
The ASP provides the platform (like a website or mobile app) where users upload and sign documents. It connects with the eSign Service Provider via APIs. The ASP also manages the user interface and signing request flow.
ESP (eSign Service Provider)
The ESP handles the core digital signing process. It verifies the user’s identity through eKYC and generates a one-time digital signature. The ESP works with a Certifying Authority to issue a short-term DSC for signing.
KYC Provider
The KYC provider authenticates the user’s identity using Aadhaar, PAN, or other approved methods. It ensures the user is genuine before the signature is created. UIDAI is the most common KYC provider in Aadhaar-based eSign.
Certifying Authority (CA)
Capricorn CA issues the short-term Digital Signature Certificate (DSC) used to sign the document. It generates and certifies the public-private key pair securely. CAs are licensed by the government to ensure trust and legal validity.
Ways to Use E-Sign
Verify with your preferred method and start signing instantly.
Aadhaar OTP
Enter your Aadhaar number, and you’ll receive an OTP on your registered mobile number. Once you enter the OTP, you can use the E-Sign service to sign your document.
Aadhaar Biometric
To use Aadhaar Biometric for e-signing, first install the “Capricorn Biometric” app and the Biometric Device Driver. Then, enter your Aadhaar or Virtual ID and scan your finger using the biometric device. Once verified, the Sign button will appear; click it to complete your e-signature.
Capricorn E-KYC
Complete the Capricorn E-KYC process and get your E-KYC ID and PIN after submitting the form and passing a 3-step verification. You can then use them to sign your documents easily.
Aadhaar IRIS Scan
The most advanced biometric authentication method. Authenticate using your iris scan — unique, highly accurate, and nearly impossible to replicate.
Aadhaar Face Recognition
Touchless, modern, and secure. With live face recognition matched against Aadhaar records, users can sign documents without physical devices.
Why It Works So Well
The process may sound technical, but it's designed to be effortless for the user. In just a few seconds, you can sign documents without printing, scanning, or shipping anything. And behind the scenes, every party — from the ASP to the ESP, KYC provider, and CA — plays a vital role in making it legal, secure, and seamless.
eSign.Digital follows government regulations, maintains high-security standards, and provides end-to-end digital assurance, making it the most efficient way to handle document signatures in India today.
Why eSign?
Legally Valid under the Indian IT Act, 2000
Every signature made through eSign.Digital is fully recognized and compliant with the Indian IT Act, ensuring its complete validity in legal and official matters. You can have full confidence that your digital signature holds the same weight as a handwritten one.
Sign in Seconds — Anytime, Anywhere
With eSign.Digital, the entire signing process is completely paperless, helping you save both time and resources. Sign documents instantly, anywhere in the world, reducing delays and enhancing efficiency.
Eco-Friendly — Eliminates Printing, Scanning, and Shipping
By eliminating the need for paper, eSign.Digital significantly reduces the environmental impact caused by printing, scanning, and mailing documents. It's a move towards a more sustainable, greener future, benefiting businesses and the planet alike.
