The hack leverages Particle, a microcontroller platform, and Twilio, a cloud communication platform, to control lights via a voice call. The solution allows users to turn their lights on or off remotely by calling a Twilio number with a pre-configured PIN, eliminating the need for a mobile application installation. The system uses Twilio's Voice Call API to connect with Particle's digitalWrite endpoint, allowing users to control devices such as lights and air conditioners using voice commands. The hack also includes a simple web interface for configuring the PIN and device interfaces, with plans to add two-factor authentication in the future.