Directions for I-phone set up
!: down load the app on to your phone
2: Run the app you will see a screen asking for the 7 digit serial number
3: Go to the SWTOR web page log in to your account. Under "My account" on the right hand side is "Security key" With a lock next to it
That's as far as I can get. It only gives me the option to set up a physical key.