AuthLite Interactive Documentation
FEATURES: What can AuthLite Do? TOKEN TYPES: What "Factors" are supported? INSTALL: How and where to install AuthLite? CONFIGURE AuthLite for your needs CHOOSE USERS: Choose 2-factor Users ENFORCE 2-factor Logons ADMINISTER AuthLite Tokens LDAP logon support/enforcement VPN and RADIUS Configuration How to Log In Event Logging

A single Active Directory user can have any number of tokens, including YubiKeys and Google Authenticator records.  Any one token can be used interchangeably with all the other ones, with the exception of offline laptop logons (see below)