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When I ordered an official PDF copy of my college diploma, the order form had an option to enable "tracking" in the PDF file. Sure enough, when the recipient op
by eirikbakke 3y ago
When I ordered an official PDF copy of my college diploma, the order form had an option to enable "tracking" in the PDF file. Sure enough, when the recipient opened the PDF file (and when I tried it myself on a different machine), I got a notification from the company that generated the PDF...
- SpaghettiCthulu 3y agoThat's horrific! I had no idea that was even a feature of PDFs!
- layer8 3y agoPDFs are roughly on par with web pages feature-wise, including JavaScript or other actions that execute on load. Adobe did this, of course, to stave off the competition from the early web. Nowadays, PDF readers disable most of that by default (if they even support it).