Create a Warning message box in APM policy before Logon Page

Would it work if you have a logon page with the legal text on the right but on the left you had the username and password fields along with a checkbox that says "I agree with the Legal Notice"? The user would have to check the box along with provide their username and password to be allowed to proceed further. If the check box isn't checked then the go directly to a "DENY" page.

Would this work?

Seth