Prepaid debit cards can be used like credit cards, that is, you can purchase goods in any country where your credit card company provides services. But unlike credit cards, transaction amount will be withdrawn from your debit card automatically. You can even withdraw cash from your debit card using PIN. It is mandatory that you change the PIN regularly and not reveal it to anyone to avoid unauthorized usage. It is advisable to keep checking your transactions and to set spending limit per day so that no one can misuse it in case the card has been misplaced.