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When distributing interactive PDF
forms, you may want to restrict some of the capabilities that are
normally available to PDF forms. For example, in a PDF form, you
can normally add comments, insert and delete pages, sign the form,
copy text, and save copies of the form.
You can select the Form Properties dialog box from the File menu
and set the PDF security options in the PDF Security tab to restrict
access to certain capabilities. You can disable the following options:
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Printing of forms
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Ability to open a form without a password
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Insertion, extraction, or rotation of pages
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Ability to add comments
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Ability to add signatures
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Copying of text and images
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Plain text metadata
When you restrict access to any of the PDF form features, you
should be aware that it may also affect the ability of screen readers
to read the tagged PDF elements in your file. A
screen reader
is
assistive software technology that allows users with vision impairment
or disabilities to interact with computer software. To ensure that
the form is available to these users, you need to enable text access for
screen reader devices.
To set a password to open a PDF form
You can set a password
that a user must enter to open a PDF form. This is a two-step process;
first, you specify that a password is required and then you specify the
password that the user must enter when opening the form.
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Select File > Form Properties.
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Click the PDF Security tab.
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Select Require A Password To Open The Document, and click
OK.
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Save the form as an Adobe PDF Form (*.pdf).
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In the Set Document Open Password dialog box, do these tasks:
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In the Document Open Password box, type a password.
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In the Confirm box, retype the password.
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Click OK.
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Close the form design.
To restrict printing in a PDF form
You can prevent users
from print a PDF form. You can specify whether the form can be printed,
printed with minimal resolution, or printed with a high resolution output.
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Select File > Form Properties.
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Click the PDF Security tab.
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In the Permissions area, select Use A Password To Restrict
Printing And Editing Of The Document And Its Security Settings.
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In the Printing Allowed list, select one of the following
options:
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None
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Low Resolution (150 dpi)
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High Resolution
To restrict editing in a PDF form
You can disable certain
editing capabilities for PDF forms:
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Inserting, extracting,
and rotating pages
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Adding comments
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Adding signatures
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Copying of text and images
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Enabling plain text metadata
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Select File
> Form Properties.
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Click the PDF Security tab.
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In the Permissions area, select Use A Password To Restrict
Printing And Editing Of The Document And Its Security Settings.
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In the Changes Allowed list, select one of the following
options:
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Inserting, deleting, and rotating pages
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Filling in form fields and signing
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Commenting, filling in form fields, and signing
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Any except extracting pages
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Select one or both of the following options:
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Enable copying of text, images, and other content
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Enable plaintext metadata
To enable text access for screen readers in secure forms
If you choose to
set options that restrict access to PDF functions, you should be aware
that these options can also affect the ability of screen readers
to read the tagged PDF material in your form.
To ensure that
your forms are still accessible to screen reader devices, you must ensure
that the Text Access For Screen Readers option is selected.
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Select File > Form Properties.
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Click the PDF Security tab and, in the Permissions area,
do these tasks:
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