Credit Sticks - how they work, hacking etc.

By Skie, in Star Wars: Edge of the Empire RPG

Hi,

Can someone explain how credit sticks work in the SW universe?

I imagine there are two types of them: disposable and personal.

Personal work more or less like our debit cards, they're linked with a bank account and might be useless on the worlds without a holonet access.

Disposable ones are used for carrying around and have fixed amount on them - they're futuristic banknotes and can be coded, but usually aren't.

Now, the books and wookiepedia say that it is very, very difficult, almost impossible to hack credsticks - so what difficulty would you give it? 5 red dice? 5 purple? My group's slicer (currently - 6 int, 5 computers) would really like to know.

What are your ideas about that?