Is your home “smart”? Connected?
It used to be when I first started in the Locksmithing business in 1985 the deadbolt lock was prevalent on doors as the added security as well as mechanical push button locks. The Jewish communities loved those because there was no electrical parts so the sabbath was still properly observed by not carrying a key (or anything).
Later on Schlage came out with a residential grade (locks are graded 1,2,3 will explain in a news letter) that had a battery operated system with a red led readout on the body of the lock facing up. You would rotate the knob in one direction for the numbers (1-9) I believe, to go up in sequence or the opposite way to go down. You would stop on each number of your combination to open the door.
Electronic locks were coming out for commercial use and quite expensive. Some still are. For the home owner to be able to have and alarm system, cameras, electronic locks, lights that can be operated from anywhere the internet is available. Use your cellular smart phone, tablet, computer etc to operate your home. Check on child care workers inside your home or set your alarm system from afar because you forgotten to when you left. The “smart” connected homes are now available and affordable.
You can start out with a couple of features and build on it.
http://www.nexiahome.com/NexiaHome.aspx
look at Schlage Nexia Home Intelligence systems.