Security in every signature
We built SmoothSign with security and privacy at the core — not as an add-on.
Encrypted signature storage
Your signature is stored encrypted in isolated storage and is never accessible to other users — only for signings you initiate yourself.
Signed PDF delivery
The signing service processes your PDFs and sends the signed copy by email. Save your own copy. See our Privacy Policy for download availability and document retention.
Dual OTP — email + SMS
Every signing is confirmed with two independent one-time codes: one by email and one by SMS. This delivers strong two-factor verification on each document.
Passkey support
Sign in with biometrics or your device passkey. Faster and safer than passwords.
Audit log on every signature
IP address, timestamp, email and device info are logged and attached to the signed PDF for full traceability.
eIDAS compliant
SmoothSign delivers an advanced variant of Simple Electronic Signature (SES) in line with the EU eIDAS regulation.
Hosted in the EU
All data traffic and storage happens on EU infrastructure, in accordance with GDPR.