As a rule, you have to present a valid identification document such as an identity card or passport and a so-called utility bill, i.e. a bill for telephone, gas or electricity. It is important that the address stored in your casino account appears on the invoice.
One common method is to use a wire transfer from your bank to the casino's bank. Another option is to use a cashier's check or a certified check. Additionally, some casinos may accept electronic funds transfers or other digital payment methods.