Palm Vein Unlocking: Achieve recognition in just 0.1 seconds with secure, forgery-proof palm vein technology. Your palm vein data is stored locally on the lock, keeping your privacy entirely in your hands.This all-in-one device: This smart lock features a 2K HD night-vision camera, a 150° wide-angle video doorbell, and a smart lock with real-time alerts—keeping your home secure.The Rear Lock Video Screen: The Video Screen lets you easily check the front door without an app, offering a simple, intuitive design perfect for seniors and children.Dual Power Supply System: With two batteries, enjoy up to 5 months of total usage, plus 4 AAA backup batteries for uninterrupted performance during power outages.Home Automation with Matter  & Apple Home: Seamlessly compatible with the eufy Ecosystem and HomeBase 3 for advanced AI features and enhanced security. Supports Matter for easy, secure connections with Apple Home, Google Home, Alexa, and SmartThings. Enjoy a privacy-first, simple, and compatible smart home experience.