The six-digit PIN is your individual, self-assigned and private PIN that you need every time you wish to identify yourself online with your ID card. The PIN you receive by post approximately two weeks after applying for your ID card has five digits. You must replace this five-digit transport PIN with a six-digit PIN of your own choosing before using the online ID card function for the first time. Once you have your five-digit transport PIN, you may use the AUTHADA app to set your private six-digit PIN for the first time.