Digital Signature Certificate – What it is and How to get it? We believe that you know very well the identity proof of a person like Aadhaar, Voter ID, Driving License and Passport are the essential document required to proof the identity of a nationalized person. Nowadays it plays the vital role to represent the unique identity of a person as we are moving forward to digitization. In same sense, DSC (Digital Signature Certificate) is an electronic certificate used for business purpose where Company, Directors, Partners and Proprietors can represent their signature electronically in certain documents legally is same like as Aadhaar, DL and Passport.