Omnilert can be configured to allow user logins via Shibboleth. Omnilert participates as a "Service Provider" (SP) in the InCommon Federation for federated metadata. (See https://www.incommon.org/participants/ for a list of InCommon participants.)
Omnilert can also accept non-InCommon Shibboleth authentication but will require an exchange of metadata to make such a connection.
Omnilert can also be configured to allow user logins via LDAP.
Omnilert will need to be permitted to access your LDAP server to "bind" and query for user logins. The process is fairly simple and straight-forward for any LDAP admin to set up.
Looking to implement Shibboleth or LDAP logins?
Contact your Omnilert account rep or submit a request to request more advanced documentation and begin the process of setup.