Because it doesn't replace the entire deadbolt, a retrofit is usually ... to stop you from buying a traditional, "dumb" front ...

Today’s door locks can be separated into three categories—conventional, nonconnected deadbolts ... a box strike made of heavy-duty metal and install it with the screws provided.

Some models come with a little magnet, which you install near the lock, to determine when the door is closed or open, ensuring that you don’t lock the deadbolt when the door is left ajar.

and installing the Encode took another 20. This mainly involved fitting the lock on just right in my door, securing the screws, connecting to my Wi-Fi, and activating the device. The deadbolt hole ...