Zero-Knowledge
SIIS never sees your documents. Here's how we guarantee it.
When sealing
Only the hash leaves your browser. Your document stays on your device.
When using CarryOn
Only encrypted data leaves your browser. The encryption key travels via a separate channel—never through SIIS.
No tracking
No analytics cookies, no third-party data sharing. Your privacy is built into the architecture.
More reading: Hashing · Encryption