Presence by 4SI Invitation required

PRESENCE BY 4SI

Authority begins
with presence.

Presence is the private control environment for physical trust. Access is limited to invited accounts and verified with a device-bound passkey.

Phishing-resistantNo reusable password is transmittedInvite-onlyEvery account is issued by an authorized administrator

SECURE ACCESS

Sign in with your passkey

Your device will ask for Face ID, Touch ID, Windows Hello or its local unlock method. 4SI never receives that biometric data.

FIRST-TIME ACCESS

A passkey is created only after a one-time invitation has activated the account. Do not use the sign-in button before that step.

Request or recover an invitation
Authentication is challenge-bound, origin-bound and verified server-side. Sessions expire automatically.
PLANNED ACCESS METHOD
4SI

Physical trust infrastructure for systems operating beyond digital certainty.

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