The author of the text reminisces about getting a Tamagotchi as a child and how it taught him responsibility. He then builds his own SMS-powered Tamagotchi using Twilio's API, Hapi framework, and Node.js. The application allows users to interact with their virtual pet by sending SMS messages, which triggers various responses and actions, such as feeding, playing, sleeping, and waking up. The author adds personality to the pet by introducing randomness and AI-like behavior, making it more interactive and engaging. The project showcases how software can replicate old-school toys and bring back nostalgic experiences with modern technology.