Card for digital download in the ps3 case?

The one thing I'm wondering is how exactly the digital download for the free PS Vita version will work. Is it just going to be a card in the packaging like dlc? Or will they make you attach both versions to a single account? I only really want it for Vita so I told my neighbor if he wanted to pay me the $20 difference for the ps3 version I'd just take the DLC card or whatever and he could have the console version.

Sounds to me like it's tied into an Online pass. Which although sucks i can understand them not wanting people to be trading copies.