Fujitsu ScanSnap S300 Operator's Manual page 174

Operation
5. Load a document onto the ScanSnap.
6. Press the [SCAN] button
⇒
Scanning is started.
⇒
If the [Use a fixed password] is not marked in step 3, the following dialog box appears.
In the [Password] and [Confirm] fields, type in the same password, and then click the
[OK] button.
HINT
⇒
The scanned document is saved as a password-protected PDF file.
ATTENTION
154
.
•
The following characters can be used to set passwords:
Number of characters: Up to 16 characters
Characters: A-Z, a-z, 0-9
Symbols: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~
•
If you click the [Cancel] button, the PDF file is saved without a password.
If you forget a password, there is no way to open the PDF file. It is a good idea
to store passwords in another secure location in case you forget them.