< password >
The password input box behaves very similar to the text box. The only difference being you cannot see what you type. Instead for every character an asterisk is displayed. This offers some protection from prying eyes, but is not foolproof. There are utilities that can read the actual password. Also anything you submit is sent unencrypted. Consider yourself warned.
<INPUT TYPE="password" NAME="password">
You can use all attributes for the text input box here. SIZE for the size of the box. MAXLENGTH for limiting the amount of characters you can type. Don't be confused by the NAME used, you can use anything you like. It may even be safer to use something entirely different.