eSignature is a digital tool that lets you sign documents electronically by using your UID number. It's like a digital signature that verifies your identity and proves you've agreed to the terms of a contract or agreement. eSignature Service is quick, easy, and secure. To use it, you just need to link your Aadhaar number to your mobile phone. When you need to sign a document, you will receive an OTP on your phone. You can enter this OTP to confirm your identity and sign the document digitally. This eliminates the need for physical signatures and paperwork so you can save on your time and effort. It's a step towards a more digital and paperless future.