WHAT MAKES A SECURITY SYSTEM SMART A smart security system does more than alert you if a burglar tries to break into your home. Smart home security uses your Wi-Fi network to connect entry sensors and sirens to devices like smart door locks, smart thermostats, and smart lightbulbs. Once connected, these devices can talk to each other and integrate with your security system to make your life more convenient and more secure. One of the most important features you should look for in a smart security system is a mobile app that lets you keep tabs on your home from anywhere. If you have indoor and outdoor security cameras or a smart video doorbell, you should be able to access live or recorded video from the app. This is important to help you tell a real emergency from a false alarm.