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 ...

What do you do if you receive a PDF document by e-mail and need to sign it and send it back? You probably print it out, sign it, and then scan it again before e-mailing it. It’s a tedious process and ...

Firstly, you need your signature in digital form, preferably using a tablet PC with pen input. If you don’t have such a device to hand, sign on a white sheet of paper and take a photo of your ...

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 ...