The Yale YMF 40 has everything you need to ensure peace of mind regardless of using it for your home or office. It contains a one-touch fingerprint system that can verify your fingerprints easily and an automatic fingerprint cover that opens and closes once you tap your finger in it. Another key feature is a fake pin code system that allows you to enter random fake numbers before or after entering your correct passcode. This helps to avoid your actual pin code from being exposed or seen by others. The Yale YMF 40 is also built with the utmost convenience in mind, namely a voice guide feature for easy set-up and operation status. An 80dB alarm is also included that detects a break-in, physical damage or fire at a temperature above 55 degrees.