If you lose your password, you will need the recovery code to log in. This is only for you. The activation code on the other hand must be given to someone you trust; it is required to trigger the data inheritance process.
How do I pass on the activation code?
Download the PDF with the activation code, print it out and give the printout to the person of trust. If there is more than one person of trust, simply pass on the same activation code several times.