[This is reposted from another airhost thread with minor revisions. My apologies for the duplication but this seems to be the active forum for discussing smart locks.]
We recently installed the LockState LS-6i and I'm very pleased with it. From prior experience I knew we needed a lock that was 1. keypad based (e.g., not requiring a phone app or physical key) and 2. could be managed easily from a web interface (e.g., no needing to hand enter codes into the lock), 3. integrated with Airbnb, 4. available now. Due to a family health issue, we've often been managing our Airbnb remotely and so the lock had to connect to the internet. After doing a fair amount of research, the LockState 6i seemed to be the only solution that met my criteria. Our Airbnb set up is a whole house, four bedrooms that are mostly booked individually but sometimes booked in combination or as one unit.
A few of the highlights:
* Due to the volume of guests, having a unique, time-bound, key code for each guest has been a big improvement over other solutions like giving everyone the same key code with a simpler lock.
* While we've had no security issues at our house, I love that this solution gives us detailed history of who's entering and when.
* I sense that issuing a unique key code reassures security-conscious guests. In our case this is probably more about perceptions than any real threat but it can't hurt to be perceived as more secure.
* The Airbnb integration has been exceedingly simple and works well. After a few clicks on the web interface, new guests get an email with a randomly generated code and the time-limits within which the code will work. It's all very professional. The email template is customizable. For older bookings that preceded installation of the lock, I have been manually entering the information. Even for the manual entry, it's easy and fast.
* The web-based service offered by LockState is very reasonably priced at about one to two US dollars a month (depending on which services you opt for) with discounts if you pay annually. They really couldn't have priced it lower. Some hardware + service combinations are pricey and leave you feeling gouged, not this service. Also, I am actually grateful that they are charging something as it aligns their incentives and mine that they continue to invest in that part of the offering..
* Customer support is very good. I noticed on Amazon that someone from the company was actively responding to issues and this encouraged me to take the plunge. I have also reached out twice about minor questions and have been impressed with the responsiveness. Finally, it's also worth noting that some of the more critical reviews are of earlier versions of the hardware/software that do not appear to be relevant any more.
* I liked that the company sells a range of products and, as a result, isn't dependent on this one lock to keep the company afloat. Some newer, pure "Internet of Things" companies have struggled and LockState's more diverse portfolio of products reassured me that they're likely to be more stable.
A few other considerations:
* The hardware is not cheap so I wouldn't necessarily use this for a safe, low-volume location (there is a lower cost option from Lockstate) . In other words, a cheaper, not internet connected keypad with a handful of reused keycodes could probably work just fine for many hosts. For a higher volume host or one that needs a high security solution I think it's an excellent option.
* At this time, you can't automatically generate unique access code from a guest's phone number (you can do this manually). LockState knows this is something hosts would like (and I suspect Airbnb might need to enable it by sharing that information).
* The web interface can be a bit confusing at first (there are a lot of options that take a bit to make sense of). When talking to a customer service rep I was told they're updating the interface soon. To be clear, though, this is a minor concern and the site works very well overall. I check the site multiple times a day (to keep tabs on the house) and it works fairly well on my phone, too.
* The directions that came with the lock say that guests should hit the "Enter" key. On our lock there is no "enter" key and users hit the pound (#) key. This is trivial to convey to guests (we added it to the automatically generated email and have a label above the lock, too).
So, in short, I'm really glad we got it and recommend it to anyone who wants an easy way to generate and manage unique keys for each guest.