The author of the article, Greg Baugues, successfully taught his dog to text selfies using an Arduino Yun and Twilio's Programmable MMS service. The project involves a simple program running on each processor of the Arduino Yun, which waits for a button press, takes a picture with a webcam, uploads it to Dropbox, and sends the selfie as an MMS via Twilio. The entire process is achieved using less than 60 lines of code and relies on pre-installed Python scripts for Linux on the Arduino Yun. This project showcases how simple hardware hacking can be with WiFi-enabled devices like the Arduino Yun, which have lowered the barrier to entry for web developers interested in Internet of Things projects.