This document provides instructions for using Dekart Logon for Lotus Notes, a software that allows logging into Lotus Notes using a key storage device (KSD) like a smart card or USB token. It authenticates users via the KSD using a personal identification number (PIN) or biometric identifier like a fingerprint. The software integrates with Lotus Notes to enable single sign-on. Administrators can manage user accounts and KSDs from the Dekart Logon administrator interface. End users can log into Lotus Notes with one click using their preferred authentication method on the KSD.