And the look of your existing lock hardware won't change. You won't be able to tell it is a smart lock by looking at it, which is an advantage for people who prefer the legacy look of door hardware. This is also an advantage if you like the color. Matching new door hardware color...
point is to not carry keys on your person all the time, it's still nice to have backup if the WiFi, power, or lock's batteries crap out. Some smart locks can be jumpstarted with a nine-volt battery instead of a key, which might be nice if you're worried about the lock being ...