PosteID — SPID Digital Identity API Integration & Protocol Analysis

Enterprise-grade compliant authorization access, protocol reverse engineering, and Open Data integration (based on authorized/public channels)

Delivery starting price
$300 starting
Digital Identity · SPID · QR Login · Electronic ID Registration

Securely connect PosteID authentication capabilities to your platform

We provide technically feasible authorization access, protocol analysis reports, and runnable API source code for enterprises needing to interact with Italian SPID / PosteID, covering QR login, PIN generation, CIE / passport document registration, and bank transfer verification workflows.

Passwordless QR Authorization — Help you implement passwordless login based on QR (scan + app confirmation), wrapped in secure callback and webhook patterns.
Online Document Registration — Supports online recognition and linking of CIE (electronic ID) and passports, forming auditable registration APIs.
Bank Transfer Verification (Bonifico) — Enable automated verification of account ownership via Italian bank transfers and generate verification credentials.
Offline PIN & Fingerprint Authorization — Device-based temporary PIN and biometric-based authorization to balance UX and audit logs.
Get in touch View Deliverables

Core Deliverables

Delivery Pack (Sample)

  • Protocol analysis report: SPID / PosteID authorization flow, handshake, and QR authorization diagrams
  • OpenAPI (Swagger) interface specifications and example calls
  • Runnable backend adaptation source code (Node.js / Python samples) and deployment instructions
  • Test cases, automation scripts, and compliance logging strategy recommendations
  • NDA and privacy compliance guidance (GDPR alignment and data minimization)

Quick Example: QR Authorization Callback (pseudocode)

// POST /api/v1/posteid/auth/callback
Content-Type: application/json
{
  "posteid_session": "SESSION_ID_abc123",
  "user_spid_id": "spid:it:12345678",
  "auth_level": "SPID_2",
  "status": "AUTHORIZED",
  "issued_at": "2025-10-01T12:20:00Z",
  "signature": "base64sig..."
}

// Backend should verify the signature and validate session and nonce, then issue an internal session token (JWT)

Key Deliverables

From protocol analysis to deliverable source code, we also provide security assessment, data retention policies, and GDPR/SPID-aligned compliance guidance to ensure production readiness.

API Integration Guide (Developer Guide Excerpt)

  1. Confirm integration mode: as an authentication proxy (redirect flow) or internal verification (callback + signature verification).
  2. Set up endpoints: implement /auth/start, /auth/callback, /id/verify, store nonces and verify signatures.
  3. Implement QR code generation and validity checks: session with expiry and one-time nonce to prevent replay attacks.
  4. Document registration workflow: upload document data, invoke OCR and document chain validation, store minimized KYC records and capture user consent evidence.
  5. Bank transfer verification: monitor transfer receipts or verify amount and description code using user-uploaded bank slips.
  6. Security & Compliance: use HTTPS, HSTS, signature verification, audit logs, and GDPR-aligned data retention/deletion.

Example Endpoints (Reference)

GET /api/v1/posteid/start?client_id=your_app POST /api/v1/posteid/auth/callback <-- Receive authorization result POST /api/v1/posteid/id/verify <-- Document OCR and manual review POST /api/v1/posteid/bonifico/verify <-- Bank transfer verification

About Our Studio

We are a technology team focused on application protocol analysis and authorized API integration, with members from fintech, cloud security, and mobile app domains. We specialize in packaging PosteID’s authorization capabilities into enterprise-ready, compliant, and secure APIs.

  • Expert in protocol reverse engineering, authorization flow redesign, and OpenData / OpenID integration
  • Supports cross-platform (iOS / Android) API adaptation and SDK packaging
  • Provides compliance guidance: GDPR, SPID requirements, and audit log design
  • Deliverables include: OpenAPI, sample code, test scripts, and deployment documentation

Contact & Collaboration

If you need to submit target app name, interface requirements, or request a project quote, please visit our contact page:

View Contact Information

PosteID Official App Features (Collapsible)

PosteID is Poste Italiane's official digital identity app for accessing public administration and authorized private-sector services (SPID system). Main features include:

  • Electronic document registration: complete identity verification using Electronic ID (CIE) or passport, without visiting a post office.
  • Bank transfer registration (bonifico): complete registration verification by transferring to a same-name Italian bank account.
  • QR Code passwordless login: scan the QR generated by the service and authorize login within the app.
  • Fingerprint and biometric authentication: supports quick authorization using fingerprint.
  • SPID 3 (high security) support: can generate/use SPID 3 PIN to meet strong authentication requirements.
  • Temporary PIN generator: generates one-time PIN offline for login.
  • Only Italian language support: app and customer service primarily in Italian, phone support +39 06.977.977.77.

For more information, refer to the PosteID official pages and accessibility statements.