Smart Sliding Glass Door Lock - Waterproof Keyless Entry with WiFi, Bluetooth, Digital Keypad & Fingerprint - Aluminum Mortise Lock with Handle (Silver, Large) - Perfect for Patio, Balcony & Home Security

Searched and searched for a 'sliding' door smart lock and stumbled on this one. After doing considerable research, found this lock at a very good price when compared to the same lock on other sites. If you have tools to mill, the lock comes with a template. If not, hire someone with the appropriate tools to have it professionally installed. It's worth it. ! Feedback from my use and from the installer:Pros:- Nice look and feel, voice prompts and responses are crystal clear.- Audible notification when the door is locked/unlocked.- Easy setup for fingerprint and the key-card registration. Literally took less than 30 seconds!- Can send e-keys (even to multiple recipients at once) via text message or email- E-keys offer lots of flexibility. They can be timed (i.e for visitors), permanant (no end date), or selected days (i.e key only works on Mondays!)- Manual or app generated (4-9 digit) pass-codes that can be shared via sms or email- Physical keys (2 incl) if the 4 AAA batteries run out of juice and you can't use a pin or key-card (2 incl)- Narrow footprint (1/2 inch wide) means it should fit most doors (mine is an Anderson sliding, with integrated blinds).- You can opt to install this in conjunction with the original door lock; original lock can then serve as an indoor safetly lock.Cons:- The mortise lock (I'm told!) wasn't the same build quality as the installer was accustomed to (i.e. a little flimsy, but works well!); hard opening and closing might cause a failure in the mortise.- The lock is not compatible to Google Home, Nest, Alexa, etc. It's a standalone app. Works great, but still no integration with popular smart home apps.- The app appears sketchy at first but that's only because the included QR code to download the app, redirects you to Chinese language site (you can translate on the site). You can also opt to download the app from Google Play (trusted download).- Sharing e-keys means the recpient has to install the TT Lock App for proximity opening/closing- The app will only unlock the door via proximity (note: Yale-Nest Locks can open the door from the other side of the planet!)- UPDATE: There is a flaw in the pin number unlock. If you have a 4-digit pin, you can enter 20 digits and as long as the last 4 match, it'll unlock. Try it !There are a lot of other locks out there that offer similar capabilities at a premium price point. Maybe even offers the total smart-home integration. But if this fits your use case, and the con's are too off-putting, it's a pretty good choice.