Documentation
SDI documents
White papers and technical documents on Secure Digital Identity. Click any title to open the PDF.
SDI Documents
- Secure Digital IdentityAn overview of the SDI platform: its origins, how nonce-based PKI verification works, PCM protection, dynamic certificate pinning, and built-in kill switches.
- SDI vs MFA vs PasskeyA side-by-side comparison of SDI with MFA and Passkey/FIDO across phishing resistance, spoofing detection, registration, device theft, and ease of use.
- SDI and Phishing AttacksHow SDI detects and defeats phishing and spoofing, from simple fake sites to hacked DNS and malicious proxy servers with valid certificates.
- AI IdentityWhy autonomous AI agents and robots need their own identity, and how SDI-3 lets them authenticate and act securely on their own without eavesdropping, interruption, or hijacking.
- AI Opinion of SDI PatentsAn independent AI-driven assessment of why the SDI patent's cryptographic workflow is novel and has no matching prior filings.
- SDI-3: "Hardened" WirelessJam it, lose it — but never break it. See how O-T-O SDI holds a tamper-proof link across any distance.

