Enter whatever. Use 1 to type 1, use 2 to type 2, use 3 to type 3, use 4 to type 4, use 5 to type 5, use 6 to type 6, use 7 to type 7, use 8 to type 8, use 9 to type 9, and use 0 to type 0. If you use the C button, then everything you typed will go away. If you use the enter key, then your code is either wrong or right. If you use the quick enter button, then you can enter your code at the bottom.