Ethics Techno Solutions
🏆ENTERPRISE COMPLIANCE CASE STUDY

My Digi Signer — Bulk Digital Signature & Invoicing Automation Case Study

Automating high-volume PDF invoice and tax audit digital signing with USB Token DSC and Aadhaar eSign integration.

Client ProfileFinLogistics Corporate Services
Industry SectorLegal, Tax & Statutory Compliance
Geographic ScopeMumbai & Ahmedabad, India
Project Duration6 Weeks Fast-Track Delivery
50,000+Monthly Invoices SignedProcessed in under 3 hours with zero human intervention
95%Reduction in Courier CostsCompletely eliminated paper printing and physical courier expenses
100%Audit CompliancePassed rigorous statutory tax audits and legal verification tests
📖Executive Summary

Project Overview & Context

Handling monthly billing runs of over 50,000 invoices required finance teams to manually insert USB dongles, sign individual documents, and email PDFs one by one. My Digi Signer automated this entire lifecycle into a secure, unattended batch processing engine.

⚠️The Challenge

Massive Document Bottlenecks during Month-End Invoicing

Manual PDF signing created immense end-of-month stress, delayed customer payment cycles, and generated high printing and courier costs:

✕Manual USB Token Signing: Signing 50,000 invoices manually took a dedicated accounting team over 4 working days.
✕Delayed Dispatch & Payment Cycles: Clients did not release invoice payments until digitally signed tax documents were received.
✕Lack of Cryptographic Audit Trails: Difficult to verify document authenticity, timestamp integrity, or certificate revocation status.
💡The Engineering Solution

Automated Cloud & Desktop PKI Digital Signature Engine

Ethics Techno Solutions engineered My Digi Signer, a high-throughput crypto utility supporting Class 3 USB tokens, HSM hardware, and Aadhaar eSign.

Core Deliverables Implemented:

✓Batch Folder Watcher & Auto-Signer: Monitors ERP invoice export folders and automatically signs hundreds of PDFs per minute in the background.
✓Dynamic Signature Placement: Automatically locates invoice footer coordinates or specific signature anchor text to place digital signatures precisely.
✓Automated Email Dispatch: Merges signed invoices with customer emails and dispatches them instantly with delivery read receipts.

Technology & Architectural Pillars:

Cryptography: Java PKI / Bouncy Castle crypto library compliant with Indian IT Act 2000
Token Support: All major CSPs (ePass2003, Watchdata, ProxKey, mToken)
Storage: Secure encrypted audit repository with timestamped verification logs
“

My Digi Signer saved our accounts department hundreds of hours every month. Our invoices are signed and emailed to customers within minutes of ERP billing completion.

Sunil Agarwal

Chief Financial Officer • FinLogistics Corporate Services

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⚡Technology Stack

Java PKIBouncy CastleC# WPFNext.js APIREST Microservice
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