* Save your valuable time, for instance: changing back a password to extend its operating period and reuse it before it expires, you must enter 10 commands/strings: login - password - passwd - old - new - new - passwd - new - old - old, it will take you a minute nearly if fast and correctly, changing 100 passwords will take 100 minutes. 2UPM does this in only a few seconds.
* Avoid entering the incorrect passwords and forgetting them.
* To free yourself from the troublesome passwords generating and management.

Generally, the sources of the passwords modifying requirement are security ensuring for the OS and/or applications, internal request (company or department even yourself) and external request (for instance: Sarbanes Oxley (SOX) law). If your OS and/or applications have these requirements, 2UPM can increase your work efficiency many times in this domain.