This document discusses voice technology and its increasing use. It defines voice command as the ability of digital devices to receive, recognize, and act on spoken commands. Voice technology is now commonly used for tasks like making calls, getting information, and controlling smart home devices in locations like cars, homes, and offices. Major companies like Apple (Siri) and Amazon (Alexa) have developed voice assistants that are integrated across many devices and platforms. The document suggests that voice search is changing human behavior by making life easier and allowing a more natural interaction with technology.