Operation Manual

292
Security
Last updated 4/7/2015
4 Type the password in the corresponding field. For each keystroke, the password strength meter evaluates your
password and indicates the password strength using color patterns.
5 Select what the user can print from the Printing Allowed menu:
None Prevents users from printing the document.
Low Resolution (150 dpi) Lets users print at no higher than 150-dpi resolution. Printing may be slower because each
page is printed as a bitmap image. This option is available only if the Compatibility option is set to Acrobat 5 (PDF
1.4) or later.
High Resolution Lets users print at any resolution, directing high-quality vector output to PostScript and other
printers that support advanced high-quality printing features.
6 Select what the user can change from the Changes Allowed menu:
None Prevents users from making any changes to the document that are listed in the Changes Allowed menu, such
as filling in form fields and adding comments.
Inserting, Deleting, And Rotating Pages Lets users insert, delete, and rotate pages, and create bookmarks and
thumbnails. This option is only available for high (128-bit RC4 or AES) encryption.
Filling In Form Fields And Signing Existing Signature Fields Lets users fill in forms and add digital signatures. This
option doesn’t allow them to add comments or create form fields. This option is only available for high (128-bit RC4
or AES) encryption.
Commenting, Filling In Form Fields, And Signing Existing Signature Fields Lets users add comments and digital
signatures, and fill in forms. This option doesn’t allow users to move page objects or create form fields.
Any Except Extracting Pages Lets users edit the document, create and fill in form fields, and add comments and
digital signatures.
7 Choose any of the following options:
Enable Copying Of Text, Images, And Other Content Lets users select and copy the contents of a PDF.
Enable Text Access For Screen Reader Devices For The Visually Impaired Lets visually impaired users read the
document with screen readers, but doesn’t allow users to copy or extract the document’s contents. This option is
available only for high (128-bit RC4 or AES) encryption.
8 Select an Acrobat version from the Compatibility menu. Choose a version equal to or lower than the recipients’
version of Acrobat or Reader. The Compatibility option you choose determines the type of encryption used. It is
important to choose a version compatible with the recipient's version of Acrobat or Reader. For example, Acrobat 7
cannot open a PDF encrypted for Acrobat X and later.