Taylor, a tech-savvy millennial reviewed PIN Genie smart lock on http://intelligenthomeblog.com
In the conclusion, the author said, "The PIN Genie Smart Lock is a cost-effective and useful option for anyone wanting to add smarts and an extra level flexible security to the locks in their home. It’s a little pricey but its made to be for someone who wants quality, and is not concerned too much about price. If you’re frugal there are lower quality options on the market."
See this product review on http://intelligenthomeblog.com