A Keycode is an alpha-numeric code that is unique to your aircraft. This code is used to decipher the bidding of your lock and allows us to make spare keys without the need of a sample key.  We advise you not to share your keycode with others, but we will only ship keys to registered addresses for security purposes.    Keycodes look like:  7M_____ 8M________ 7MA___________ 8MA___________ 8R____________ 8RA__________ 123XH XH123 SJ____________