how ebs can prevent fraud with bank accounts people enter during payment using iReceivables

Hi,

                 Paying using 'Bank Account Transfer' is a standard  option in ireceivables.Customers can enter a routing number and bank account number during paying. The question is 'How can we make sure the entered bank account number is the customers own bank account and not someone else's bank account '? Since we are taking money from some one else's account , our company could be in trouble .Is there a way to validate the information that the customer enter?

Than