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  2. Traitor tracing - Wikipedia

    en.wikipedia.org/wiki/Traitor_tracing

    The practice of traitor tracing is most often implemented with computer software, and evolved from the previous method of activation codes. In this model, each box of software ships with a unique activation number on a sticker or label that can only be read after the package is opened, separate from the CD-ROM or a DVD-ROM.

  3. PDF24 Creator - Wikipedia

    en.wikipedia.org/wiki/PDF24_Creator

    PDF encryption, decryption and signing; Change PDF information (author, title, etc.) Compress and shrink PDF files; Add a watermark or stamp a PDF file; Combine pages with a digital paper; Convert to and from PDF; Multiple PDF printers for different purposes since 7.7.0; Full featured and lightweight PDF reader since version 8.7.0

  4. Digital rights management - Wikipedia

    en.wikipedia.org/wiki/Digital_rights_management

    Also included may be the file's publisher, author, creation date, download date, and various notes. This information is not embedded in the content, as a watermark is. It is kept separate from the content, but within the file or stream. As an example, metadata is used in media purchased from iTunes for DRM-free as well as DRM-restricted content.

  5. Watermark (data file) - Wikipedia

    en.wikipedia.org/wiki/Watermark_(data_file)

    It is the process of altering the original data file, allowing for the subsequent recovery of embedded auxiliary data referred to as a watermark. A subscriber, with knowledge of the watermark and how it is recovered, can determine (to a certain extent) whether significant changes have occurred within the data file.

  6. AOL Mail Help - AOL Help

    help.aol.com/products/new-aol-mail

    You've Got Mail!® Millions of people around the world use AOL Mail, and there are times you'll have questions about using it or want to learn more about its features. That's why AOL Mail Help is here with articles, FAQs, tutorials, our AOL virtual chat assistant and live agent support options to get your questions answered.

  7. Smallpdf.com - Wikipedia

    en.wikipedia.org/wiki/Smallpdf.com

    Smallpdf is a Swiss online web-based PDF software, founded in 2013. [2] It offers free version with limited features to compress, convert and edit PDF documents. [ 3 ] And its paid version offers advanced features like OCR, compress, and more [ 4 ] .

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