With the Biometric Thumb Key, you will never have to worry about losing a key again and never have to stash a key somewhere. Your ticket to opening your front or back door is attached to your hand. You've seen movies in which a fingerprint or hand scan opens a door. Now, your house can be as secure as those edifices! Simply program the Biometric Thumb Key to recognize your print, and when you place your thumb in the slot, your door opens. You can program the Biometric Thumb Key to easily recognize all of your family's prints. This innovation is made of heavy-duty stainless steel and is suitable for your home, office or anyplace where you might want to restrict access. If it's dark, you don't need to fumble with any key. Biometric technology is the wave of the future. Don't get left behind. Use the Biometric Thumb Key.