KBA stands for "Knowledge Base Authentication" and is an IRS-compliant way to verify the identity of a user signing an 8879 electronically. But, you have to answer all the KBA questions correctly.
Clients will be required to answer four questions. If they answer one question incorrectly, they will be given two additional questions that they must answer correctly.
Clients will have four total attempts to complete the KBA successfully. If the client fails all four KBA attempts, the agreement will be canceled and Liscio will generate an automatic comment on the task that notifies the Task Owner that the KBA was failed:
If the client successfully passes the KBA and signs the 8879 document, Liscio will provide a File Audit Report as the last page of the signed document. This will also include the KBA Authentication token: