To properly sign a PDF on your Android phone or tablet, you'll need to download an app from the Google Play Store.

Now that it is 2015 – hell, even dating back to 2012 – you should know how to sign a PDF document without having to print a piece of paper. If you don’t yet, that’s OK, because the ...

How to sign a PDF using Adobe Acrobat Reader Adobe Acrobat Reader, the most popular PDF viewing software, has an electronic signature method that works for both PCs and Macs.