Smart Cards Diagnostics Hub
Smart Card Reader & PIV Diagnostics
Smart-card failures span four layers: reader, card OS, minidriver/PKCS#11, and signing application. We work top-down through each layer and isolate the exact handoff that breaks.
Symptoms we triage
- Reader present but card not detected
- Certificates not visible to Windows Hello / signing app
- PIN prompt rejected even with correct PIN
- Smart card service stops repeatedly
- macOS does not pair card with Keychain
Diagnostic flow
1. Verify reader at OS layer
certutil -scinfoExpected: Reader and card surface, ATR shown
2. List PIV identities (macOS)
sc_auth identitiesExpected: Card certificates listed with hashes
3. Confirm signing app sees certificates
Expected: Cert appears in DocuSign / Acrobat selection dialog
OS coverage
Windows 10 / 11
- • Smart Card service (SCardSvr) state
- • Minidriver enumeration
- • Group Policy smart-card removal behaviour
macOS Sonoma / Sequoia
- • sc_auth identities listing
- • SmartCardServices logs
- • CryptoTokenKit token introspection
Smart Cards troubleshooting library
In-depth diagnostic write-ups for each common Smart Cards failure mode.
Frequently asked
Do you support government PIV / CAC cards?
We diagnose middleware-level interaction only; identity issuance and policy questions stay with the issuing authority.
Ready for a structured Smart Cards diagnostic?
Independent consulting, screen-shared Zoom session, written remediation summary.