A money order is a pre-paid, secure, and guaranteed payment method that functions like a personal check. It is often used for online casino transactions as it allows players to make a deposit to their gambling account without having to use a bank or credit card. To purchase a money order, the buyer must pay the amount in cash at a participating retailer, post office, or financial institution and receive a receipt indicating the payment has been made. The recipient of the money order can then deposit it in their bank account or present it to the online casino as payment. Money orders offer a level of anonymity and security, making them a popular choice for online casino transactions.