Dynamic Password is the extension to provide better security to WordPress.
This plugin helps to change the user password every minute, every hour, every day, every weekday, every month or every year dynamically, without doing any extra work.
When you go to user profile page, there you can see “Set Dynamic Password” field below Users > Account Management field, where you can put any text, characters or dynamic strings that you can select from below dropdown.
Also, you can see your current dynamic password preview that must be matched during login.