I got this fingerprint front door lock as an upgrade to a non-app phone because I wanted the vastly easier setup of an app, and this delivered, but the physical key lock portion was lousy.Installation was the easiest I've done so far with smart locks. I tested installing it in a regular bathroom door and it fit fine, no widening of the hole necessary. Unlike other smart locks I've installed in the past the long wire was easy to stuff into the space in the door.It uses the common Tuya Smart/Smart Life apps. I had no trouble connecting and didn't need to press anything on the lock to start it. Once in I saw the people I have added to other smart locks, so that saves some time when adding them to this lock, just adding their fingerprints. The app allows disabling app unlocking (for added security), setting auto-unlock, and lock volume. It also has a log of when the lock was unlocked, and who did it.This lock has a temporary code feature. This is done right because it works even if not connected to the lock. The app can generate a temporary code form anywhere and it will work on the lock at home for five minutes. This is very useful to have, especially without requiring a WiFi connection or the optional Wi-Fi hub.I had no trouble adding my fingerprint, and it worked about 9 times out of 10.The number keypad lights up for nighttime use but it was dim and the edge numbers and lock button were noticeably dimmer.The keys operated poorly in this. They worked and I don't think they would get stuck, but it felt like they were grinding as I turned, and the lock often squeaked. It's not a big deal for me since the keys are just a backup to be used very rarely.The latch assembly is supposed to rotate to expand but it gets stuck part way so will only work in the unexpanded size. The mechanism also felt less smooth than other ones.The company logo on the front is pretty tacky. I somehow missed that in the photos, or thought it was just added for the product photos. I'm definitely using a black pen or paint to darken the name on the front.