One of the biggest improvements we see people fall in love with besides security camera monitoring, is entry control though smart locks. Most locks that work with smart home ecosystems require an independent single cylinder deadbolt to operate. Also, the deadbolt you are replacing or modifying will not be hardwired, which is a good thing because you can get into your house when the power is out. However, the downside is that you will have to change the batteries periodically. (The locks will let you know when it is time - although some more accurately than others).
We are big fans of door locks that do not replace the external tumbler (key hole) because this provides you the backup necessary to get in if something goes wrong (a partial replacement). There are a number of companies out there offering locks - some more traditional names like Shlage, and other new players like our personal favorite, August. August has actually put their technology in some Yale locks, as well.
When considering a lock, we recommend you consider what ecosystem you are using for video doorbells, because one of the slickest things you can do is get an alert on your phone of who is at the door, and then unlock it straight from the same app. To this end, look for the same branding or a company making both. We recommend having your security system point a dedicated camera at the front door anyway, but having the redundancy with a
doorbell is a great add-on. Additionally, if your lock offers a keypad, it is a nice addition for guests who might not have a smart phone but you give regular entry to, such as grandparents or children.