Class 3A Digital Signature Certificate is very basic dsc required for individual who are making bulk payments online for safe and secure payments signing documents in bulk and for Personal Use only. To apply for a DSC online in India, individuals must provide documents such as PAN card, proof of identity like driver's license and address verification (e.g., Aadhar card). Class 3A Individual User DSC is mainly used for Trademark, Copyright & Patent e-filing, e-Ticketing by IRCTC Agents.