Obviously it offers the benefit of not having to worry about your keys however these locks provide a lot of additional flexibility beyond the traditional solution. Smartcode is easy to install program and use and operates on 4 aa batteries. Swiftfinder fingerprint door lock digital biometric door lock touchscreen keypad keyless smart lock electronic entry lock with reversible lever and automatic locking for wood door office home door 3 6 out of 5 stars 57 119 99 119.
