Are retailers taking the risk? Or are they going to push it onto the customer. Will CurrentC users find that they are responsible for any fraudulent use of their account?
CurrentC payments will be through the ACH system: you provide your bank's routing number and checking account number, and authorize either MCX or the merchant to withdraw from your checking account.
Someone posted the rules about fraudulent ACH transactions: in the end, the consumer has very little protection. The only guarantees are made by the merchant, and it's up to you to decide if you believe them.