Mike Sorrentino is a Senior Editor for Mobile, covering phones, texting apps and smartwatches -- obsessing about how we can make the most of them. Mike also keeps an eye out on the movie and toy ...

If you receive a PDF or other digital file that requires your signature, you can easily do so using your phone. Whether you use an iPhone or an Android phone, both include built-in options for adding ...

There’s nothing like being on vacation – or stuck in a TSA line – and getting a “can you sign and return this today?” email. Fortunately, that no longer means scrambling for a printer and scanner.