You need to have a user on cachetur.no. Even though we're connected to geocaching.com, you need to create a new user here before you can sign in.
Creating an account and using cachetur.no is totally free. But you will need to have an account at geocaching.com before you can use cachetur.no.
You will also need to be a premium member at geocaching.com in order to get full advantage of cachetur.no.