Lost keys can become a distant memory when you install the Kwickset Obsidian Lock in your home. Enjoy the convenience of keyless access by choosing up to 16 customizable user codes for entry and one-touch locking. With patented SecureScreen technology to prevent code detection from fingerprints, the Obsidian is designed with your security and protection in mind. Sleek, modern, and low profile, the Obsidian's style-forward design will seamlessly blend in to your home's decor. With the backup power source of 9V battery, you can be confident that you'll never have to worry about carrying house keys again.