How to digitally sign a PDF when you don't have access to a printer and scanner

You can digitally sign a PDF when you don't have access to a printer or scanner, saving time and money.
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You can digitally sign a PDF in several different ways.
The most popular software for digitally signing PDFs is Adobe Acrobat Reader, but other options exist on PCs, Macs, the internet, and mobile apps.
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These days, many people don't own a printer or scanner, and with so many people working from home, something as