If you want to keep your valuables safe and hidden, you might want to consider the AX12038 Biometric Wall Safe from Barska. This safe uses a state-of-the-art fingerprint identification system that scans and matches your fingerprint to one of the 120 that can store in its memory. The safe is designed to appear flush with the wall surface making it easy to hide behind furniture. You can organize the items that you have inside the safe making use of his two removable shelves. This biometric device is powered by four AA batteries that can be easily replaced when needed. Alternatively, you can use a standard key lock as a backup option in case of an emergency or battery failure