Unified SIM operations with a tighter front door.

Inventory, usage history, and provider workflows are now protected behind organization-only email code sign-in.

Domain restricted

Only verified Green Way Systems GmbH email addresses can request access.

Passwordless

A short-lived code lands in your inbox, then the entire app unlocks.

Faster return access

Once you have signed in with email, save a passkey for one-tap access next time.

Secure sign-in

Access the SIM portal

Returning users can use a passkey. Email OTP stays available for first access and recovery.

Use Touch ID, Windows Hello, Face ID, or your security key on a device you have already trusted.

Or request an email code

Use your @greenwaysystems.de address for first-time access or whenever you need recovery.