The only minor issue is my 5-year-old has a little trouble turning it because of its cylinder shape. He is not aware of using the silver grip, so he grabs the entire knob and struggles to turn it. But that is a minor issue that can be improved later. Another minor improvement is the keyhole should be in a small well to help guide the key into the hole. Because the keyhole is underneath the knob, it can be difficult to easily fit the key properly in the hole. At times I had to bend down to put the key in properly. But still, it's a great Smart Door Lock, and the two issues mentioned do not detract from normal keyless use.I had my reservations about this particular lock, but upon opening the package, I was seriously impressed. I would consider this to be a fairly heavy duty lock. It's heavy (literally), solid and well built. Installation wasn't the easiest, but as long as you follow the directions, you'll be fine. Pairing the lock (via Bluetooth) to the ttlock phone app was a piece of cake and provides all the settings needed to get the lock functional within a couple of minutes. If you require remote access to the lock, you will need to purchase the optional wifi bridge.The main reason I purchased this lock was for the fingerprint reader. As with all fingerprint readers, it can be a bit finicky, but as long as you train the reader properly and position your finger correctly, it doesn't have any issues.My main complaint with the installation of this lock, is the latch plate. The latch plate provided is the cheapest, flimsiest piece of metal that you can easily and effortlessly bend with your fingers, basically complete garbage. I ended up using the original latch plate. It really surprised me that they included such a low quality piece, with such a beefy lock. The only other thing that is somewhat annoying, is that the lock actually talks to you to tell you if your code or fingerprint is authorized on that lock. This can be turned off in the app, BUT when you do that, it also turns off the beep tones when punching in a numeric code and it makes it somewhat difficult to know if you're actually pressing and entering a number. If it weren't for these couple of minor issues, I would give this lock a solid 5 stars.I've had this lock installed for about a week. So far, it's been great. The lock requires 4 AA batteries (not included), but I cannot comment on battery life yet. Overall, I recommend this purchase.---As an FYI, it is now 10/09/22, pushing 2 years and I have yet to change the batteries in this lock. After much use, the fingerprint reader is still a bit finicky, but I attribute this to changing conditions with my hands and not directly the reader. If you purchase this lock and start to have issues with the reader, such as in cold weather, I would recommend adding multiple instances of the same finger to get more accurate results.I have been looking for a product like this for over two years now. To be exact since my ridgeback figured out how to open the front door with my old smart lock and let him self out for a walk. Lol Luckily my neighbor found him and returned him back to us. This lock comes full of features that help out family with accessibility of our home.Pro: It looks really futuristic on the door. I Really like the different features that allow you to unlock the door in bunch a different ways, my wife prefers the pin, I like the finger print and my parents love the app unlock that I can control with e-keys by texting it to them when they need to come over.Con: The secure lock mode comes one way to fast 3s and my wife has locked her self out. Luckily I have the lock setup for remote unlock over the internet. Me and her are both admins on the app but I’m the only one who can unlock the door if secure lock is on. Also I was only able to install 3 rfid tokens not sure why the limit is so low. It should be at least ten.Wish List:Disable secure lock feature in the app.I’m hoping with the new update to the app more feature will be controllable over the internet.More than 3 rfid token setup capacityScratch proof face of the keypad.Totally not a fake Chinese bot review here. This is a 100% bonafide authentic review of the product.I’ve got to admit that I was weary of ordering this thing due to there being zero reviews at the time, I went ahead and took a chance since Amazon backs up the return policy. I’ve got to say that this is probably the best digital lock product I’ve used so far, at least for knobs/deadbolts that only take up a single bore on a door.The aesthetic of this thing is very nice, it appears to be built of an all metal construction which is much more than I can say for the typical Schlage and Kwikset digital lock kits. The operation of this lock is very smooth and it has a great tactile feel when turning. Complaints are the following:1. The touchscreen is ok, it looks sharp but isn't as responsive as I’ve come to expect here in the year if 2020. It’s screen is only “OK”.2. Not to be all preachy about the country of origin.... but it’s China. At this point, considering recent stories of the Chinese government imposing back door access into most of the COM boards manufactured for electric goods; I do not trust any electronic device coming out of that country tonot be spying on me. I would refrain from syncing up your fingerprint to this device, unlike the iPhone, the fingerprint data is unlikely to only stay on the on board memory of the device. Also, you cannot set up this device without syncing it to your phone via Bluetooth. It would be nice if you could simply set new codes using an admin code like most other conventional digital locks.