The wireless technology commonly used for smart home devices is Wi-Fi, along with Bluetooth and Zigbee. These technologies allow devices like smart bulbs, thermostats, and security cameras to communicate and be controlled remotely using a smartphone or smart home hub. The choice of technology often depends on factors such as range, power consumption, and the specific needs of the devices. Wi-Fi offers high data rates, while Zigbee is effective for low-power devices requiring a mesh network. Overall, these technologies contribute significantly to the connected home experience.