They’re almost invisible but contain a hidden code – and now their presence on a leaked document has sparked speculation about their usefulness to FBI investigators.

How Certidox Works If the scanned QR code was issued via Certidox, the app displays the official source, the current statusof the document (active, revoked, or expired), and proof of authenticity.

It’s unacceptably high — and that's why SkyQR’s QR-code verification is proving critical in protecting banks, businesses and consumers ...