A Digital Signature is the equivalent of a physical signature in electronic format, as it establishes the identity of the sender of an electronic document in the Internet. Digital Signatures are used in India for online transactions such as Company or LLP Incorporation, Income Tax Filing, Filing ROC Return, Patent, Trademark filing, E-Tenders, etc.
There are three types of Digital Signatures Class I, Class II and Class III Digital Signature.
CLASS-I : Class I type of Digital Signatures are used for securing email communication only.
Class-II : Class-II Digital Signatures are used for Company or LLP Incorporation, ROC Compliance, Inport Export Code, IT Return Filing, Obtaining DIN etc.
Class III : Class-III Digital Signatures are used mainly for E-Tendering, Filing Patent, Trademark Filing, for participating in E-Auctions etc.
Digital Signatures come in the form of a USB E-Token, wherein the Digital Signature Certificate is stored in a USB Drive and can be accessed through a computer to sign documents electronically.