Below is a visual of what Sudo can do (yes I was bored and sent myself ridiculous texts HAHA)... I generated myself a local phone number and used the app (right side) to text myself! On my phone (left side), it showed up as that number that was generated. So I could give out that instead of my real number. I can also change the newly generated number whenever I want to as well. Now imagine being able to do this for your email, credit cards, etc... It's genius! I've sold a few things on Craigslist and totally wish I had this app back then - I usually end up blocking the people I did business with, but Sudo's option is much safer!