This system allows users to remotely control their Raspberry Pi using SMS messages sent through the Twilio service. The process involves sending an SMS to a Twilio number, which triggers a webhook that calls a Python web application hosted on the Raspberry Pi. The web application receives the SMS content, evaluates it with a message handler, and performs an action on the Raspberry Pi GPIO pins based on the parsed command. A protocol is defined to understand the SMS format, where each action is associated with an object (e.g., "Light:switch:on"). The system can be extended by adding more controlled objects and implementing security measures such as filtering the SMS sender.