I think that bank accounts should be more versatile. For example, if you find a cred chip it should be possible with the right equipment to hack into the account and drain all the monies!
Lots could come from being able to access other people's accounts. You could deposit money into someone else's account for payment. The above situation where a nice little corpie boy is threatened to transfer money into a certain account or his family will be killed.
Lots of fun stuff.