The major advantage to PDF files is that you can distribute documents to a wide variety of platforms, including the Amazon Kindle. While the Kindle opens most PDFs with no difficulty, you can run into ...
Technology blogger Amit Agarwal has written up a simple guide to opening up password-protected PDF documents. Just as a quick disclaimer: this should only be used in appropriate circumstances...such ...
To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.
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