Discover Financial Services (DFS) recently announced that it has introduced Balance+, a new overdraft protection tool for its debit card customers. This new feature for its Cashback Debit Checking account will offer fee-free overdraft protection for debit card purchases, allowing customers to overdraw their account by up to $200 without incurring any fees.To qualify, accounts must be in good standing, have a positive balance and receive at least one direct deposit of $200 or more each month for the last two ...