What Is a Kill Switch? From Emergency Stops to Smartphone Security
What is a kill switch? A kill switch is a safety and security mechanism that instantly shuts down a device, system, or process to prevent harm, theft, or unauthorized access. Originally used as physical emergency stop buttons in industrial machinery, kill switches now operate in smartphones, vehicles, software platforms, and cybersecurity systems. From disabling stolen devices to isolating compromised networks, they provide critical control in both physical and digital environments.