Many taxpayers who are due a refund opt for direct deposit. In fact, it is the top method of receiving payment on a federal tax refund. It's completely safe, and delivers the cash you're entitled to quickly and easily, especially when you combine it with electronic filing methods.
Also, you should never deposit your refund into another person's account. Always make sure you are providing the correct bank account number, and that the account is either in yours or your spouse's name, if not both.