Contact

Secure Communications & Support

Zero-Knowledge Policy: Please be advised that Cryptosign operates on a strict zero-trust architecture. For inquiries regarding Keyless Kits, Citadel Plates, or the SSS Terminal, our engineering team cannot recover lost seed phrases, decrypt your backups, or access your encrypted payloads. You are the sole custodian of your data.

Order & Manufacturing Inquiries: For updates on your order status, corporate bulk purchases, or secure manufacturing inquiries, please reach out through our encrypted channels below.

• Signal Messenger:  (Recommended for highest OpSec)

• Secure Email E2E : cryptosign32@proton.me
• Support Ticket: support@cryptosign.eu

Note: For security reasons, we do not conduct customer support over unencrypted voice calls or public social media threads.