Aadhaar-based eSign, also known as Aadhaar eSign, is a digital signing solution that allows individuals to sign documents from anywhere. To use Aadhaar Based eSign, individuals must have a valid Aadhaar card and be enrolled in the biometric authentication system. Individuals need to enter their 12-digit Aadhaar numbers and OTP received on their registered mobile number. By eliminating the need for physical signatures, it promotes efficiency, reduces paperwork, and enhances security.