I love this door lock because you never have to worry about carrying keys around, losing them or having to get keys made. The biggest convenience is not having to dig around in your pocket for the keys and then find the one for that lock and unlock the door, its especially a pain in the dark... but with this electronic lock, you walk right up to your door, type in the 4 digit code, and turn the handle! it even has a button to light up the keys in the dark!! I have had different sytle electronic door locks in the past and this is the best one I've had yet since its so easy to use and to program new codes. Another thing that is very useful for me is when I am away, and family/friends stop by and get to the house before I get back. I dont want my company to sit outside while they wait for me to get home, so I give them the code for my door so they can let themselves in, and then i just simply change the code after. Also you can program temporary codes, which you can set to be only used once, twice, or as many times as you want, and then you can delete them when you want.
What I do is I have 2 different codes, one code is mine that I do not give out to anyone, and the other code is one that I will give out to people and then change after I do. If you have trouble remembering your codes, a good tip is to program it in your phone, for security, name it something other than "front door lock code". Also another good idea is, say for example you are entering your code and you feel like someone is looking to see what your code is, you can enter your secondary code in and even if they see it, it doesnt matter because you can just simply change it at a later time. Also changing the code only takes about 1-2 minutes and is very easy!!!
I even got one for my mother who is totally computer/technology illiterate, and she loves it and she uses it without any trouble!
Also if you have ever bought new door locks because you wanted to change the key, you dont have to do that anymore, all you do is change the code - Saves time and money!!!
If your thinking of getting one and never had one before, I would say, DEFINITELY GET IT, you will love it! It makes entering and exiting your home so much easier, saving a lot of frustration!