Maybe you can do something like this:
First time use of app, serves an unencrypted welcome portal, Little message about accepting what ever comes next.
After accepting, then have the app always serve encrypted.
Could even get a little creative with icons, like choose your browser, which give visuals on how to permanently accept, depending on if chrome, safari, dolphin etc. I know it would be a pain at first, but it shouldn't be to hard to get. What do you think?
--..Archer