![A machine shaped like a human stands upright, staring at a brown box full of machine parts below. The machine looks puzzled, and a thought bubble with binary code sits above the machine's head.](https://blogs.iu.edu/sciu/files/2019/11/robot-162087_640.png)
There are a variety of text messaging applications available that make communicating with friends easy. These applications typically require users to sign up for a username as a form of identification. Friends can add each other on the application by sharing their usernames, and then friends can initiate and respond to chats from each other…. Read more »