// Password must be 14+ characters long
        if (strlen($plainTextPassword) < 14) {
            $errorSink->addErrorMessage("The password must be 14 or more characters long.");
            $passedCheck = false;
        }

        // Password must contain one or more upper-case characters
        if (!preg_match("#[A-Z]+#", $plainTextPassword)) {
            $errorSink->addErrorMessage("The password must contain at least one upper-case letter.");
            $passedCheck = false;
        }

        // Password must contain one or more lower-case characters
        if (!preg_match("#[a-z]+#", $plainTextPassword)) {
            $errorSink->addErrorMessage("The password must contain at least one lower-case letter.");
            $passedCheck = false;
        }

        // Password must contain one or more digits
        if (!preg_match("#[0-9]+#", $plainTextPassword)) {
            $errorSink->addErrorMessage("The password must contain at least one digit.");
            $passedCheck = false;
        }

        // Must contain at least one special (non-word) character
        if (!preg_match("#\W+#", $plainTextPassword)) {
            $errorSink->addErrorMessage("The password must contain at least special character. You may not use the following characters: ' \" ( ) ; - | < >");
            $passedCheck = false;
        }

        // Must NOT contain any of the following characters.
        if (preg_match("#'\"();-|<>#", $plainTextPassword)) {
            $errorSink->addErrorMessage("The password must not contain any of the following characters: ' \" ( ) ; - | < >");
            $passedCheck = false;
        }

        // Must NOT contain more than 2 sequential numbers.
        if (preg_match("#012|123|234|345|456|567|678|789|890#", $plainTextPassword)) {
            $errorSink->addErrorMessage("The password must not contain more than two sequential numbers. For example, 12 is allowed, 123 is not.");
            $passedCheck = false;
        }