Security Request: Allow a sign-on page to force users to enter password

I want to have an option to make particular pages force the user to re-enter their password even if they are logged onto the user authorized to view the page protected by the sign-on. I can add a sign-on but once the user is signed in they just automatically bypass the sign-in page if they are authorized to view the page. Normally that's good but for certain pages protected by sensitive information I would want to force users to re-enter their password.

A good example of this is that we have staff working remotely and if, say, someone grabs their computer in a coffee shop while they are signed into their knack account this would help provide an extra layer of security for particular pages.