Are you still using a key to get into your house? There's no need to fumble for your keys in the dark any more. The Fingerprint ID Door Lock / Deadbolt is a cylindrical lock combined with a security deadbolt that will let you into the house using just your finger. It reads your unique fingerprint and only allows entry to prints it recognizes. With three user levels, you'll be able to determine which users have the authority to operate specific functions. Six AA batteries are required to use this door lock and are sold separately. The Fingerprint ID Door Lock / Deadbolt will accept up to 50 fingerprints in its system, providing keyless access to your entire family or your small business. This lockset is designed to fit any standard wooden door that has installation holes for a mechanical cylindrical door lock. Programming is easy, and the LED display provides added convenience for programming and user management. Four keys are included for emergency entry should the occasion arise. After correctly matching your fingerprint to the one programmed into its memory, the lock body is unlocked, and the system will power off automatically to save electrical power. If the batteries become low, you will hear four alert beeps when the lock is used. Replace the batteries as soon as possible; the Fingerprint ID Door Lock / Deadbolt's non-volatile memory will retain all enrolled fingerprints and other setup functions. The Fingerprint ID Door Lock / Deadbolt is also available for right-handed locks. For added convenience, try the Fingerprint ID Door Lock with Keypad (available for both left- and right-handed doors. This unit adds the option of gaining entry using a PIN, ideal for letting service people or temporary guests into your home without logging their fingerprints into your system.