How can I check if my client is Two-Factor authenticated?

From the Contacts tab, click the “i” info icon to the left of the contact.  Look for the Secure Login System item in the Configuration menu. 

Additional Information

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How do I opt out of the Secure Login System?
How can I view in bulk all pending items my clients need to complete?
Can I export my clients' information to Excel?
Can I set up automatic delivery of reports for clients?