To use Netfonds' guest portfolio, you need to choose a user name and password. The user name and password do not need to be the same as you have chosen for trading with Netfonds, and you don't need to be a Netfonds customer in order to use a guest portfolio. Don't forget your password, as you will be the only person knowing it.
After you have registered, your web browser will ask you to state your user name and password when you want to visit your portfolio. Your browser will remember this information as long as it runs, which enables you to work with your portfolio without giving your password frequently.