Digital signature can be categorized into two distinctions based on usage, they are:

Class 2 – This is mostly used for filing Income Tax Returns, DST filing, Registers of Companies(ROC) and signing documents.

Class 3 – This is often used for e tendering which is conducted online, other than these, some of the areas it helps are includes are:

1. Interest expression registration of the suppliers

2. Download contract

3. Bid document submission

4. Tender Evaluation which may or may not involve e-auctions