Ipad - No authorised documents found on Qlikview 9
If Ajax is a must and iPad is a requirement for deploying this application, then I'm afraid QlikView 9 is not the best option. The app lacks of lots of new functionalities that version 10 and specially 11 have, and the Ajax client in version 9 also lacks of some visualization enhancements, but yes, QlikView 9 has an Ajax client that can be used from a tablet if you don't use NTFS authorization (read, you have an Enterprise Edition license for the Server).
I'd first try the Ajax client (in the QEMC you need to mark the documents to be visible in Mobile and move them to the Mobile folder as specified in the QEMC, System, QlikView Server). Depending on the results, I'd strongly recommend to upgrade to version 10 SR4 (or even 11 SR1 if it has been released) rather than changing the security authorization method and the user management.