https://www.theverge.com/circuitbreaker/2017/8/24/16196140/otto-smart-lock-announced

If you want a smart lock, you have to be willing to stick a big, ugly hunk of metal on your door — it's pretty much unavoidable: be it upstarts like August and Latch or traditional lockmakers like Kwikset and Schlage. Every smart lock is huge.

But today, a startup called Otto is debuting its first product, the Otto Lock, and it's really, really small — about the size of a standard, non-smart lock. It's the first one that looks like something a less techy homeowner would actually want.