The computer code behind password input can be modified to force people to change their password for security reasons. This is known as “password expiration,” and some websites and companies use it regularly. However, people tend to choose new passwords that are too similar to their old ones, so this practice has not proven to be very effective (Chiasson & van Oorschot, 2015). Your friends have a hard time remembering passwords. What method can you devise for them so that they can remember their new passwords AND make them very different from the old ones?