I notice on some prepaid debit cards that you can do a direct deposit to the card (http://www.creditcards.com/credit-cards/readydebit-visa-prepaid-card.php
You can also take out cash at an ATM.
Bitcoin has the problem of chargebacks. If someone deposits cash into a BTC account and then gets the BTC and spends it, then does a chargeback...they can get their money back.
Could you not use a prepaid debit card to transfer funds to it, take out the money at an ATM and do a chargeback?
Or things like refillable gas cards that you can re-charge using a credit card (http://www.shell.us/home/content/usa/products_services/shell_cards/refillable/
I assume that you could fill the card with your credit card, pay for gas with it, then do a chargeback and they could not get the money out of it.
I am not trying to find a way to get free money or gas through chargebacks, I am trying to figure out how these are used without having the same problem that BTC does with chargebacks.