Compaq 1610 Reference Manual page 75

To help protect against unauthorized use of your handheld PC,
four levels of password security are provided.
For immediate protection, Compaq recommends
setting up the first two levels of security (login password and
password reminder) through the Password utility in the Control
Panel of your handheld PC.
For a detailed explanation of the four levels of Compaq security,
read the following topics in this section.
Login Password—The most basic level of protection. If set,
your login password or the administrator password must be
entered to access Windows CE. This occurs each time you
turn on your device (provided you have not set the password
delay feature). You are allowed five attempts to enter this
password. If the correct password is not entered on the fifth
attempt, one of two things happens:
If you set a password reminder, the Compaq Password
Reminder screen appears. See "Password Reminder" for
more on this.
If you did not set a password reminder, the device prompts
you to erase your passwords and all of your data, or to
enter one of two lockout modes (Lockout or Administrator
Lockout). See the following sections for more on this.
Password Reminder—If set, this screen appears after you
have made five unsuccessful attempts in a row to enter the
login password. It displays a question that you have created,
to which your response phrase or the administrator password
must be entered.
You have five attempts to enter the correct response. If the
correct response is not entered on the fifth attempt, the device
prompts you to erase your passwords and all of your data, or
to enter one of two lockout modes (Lockout or Administrator
Lockout). See the following section for more on this.