Digital Signature Certificates are stored on USB Tokens and can be used with a password. As per your query you can not check the past usage of your DSC. If you are bothered about any mis use then please revoke the certificate immediately and buy a new digital signature and keep it with you only. Maximum people keep their Digital Signature with their professionals and in many cases it is found that professionals misuse it.This answer is provided by Praveen R Goyal CEO eSolutions. eSolutions working in DSC field since 2022. If you wish to buy Digital Signature then visit our website : http://www.esolutions.net.in