Xped Media Thread - Social Media, Online, Print and otherwise, page-23

To give an alternative perspective:
Airbnb released a product suite in November 2015 which includes:
Host Assist – Host Assist allows for easy key exchange and keyless entry without the need to manually schedule anything. Soon hosts can connect their Airbnb accounts with partners, including August, Danalock, Igloohome, Kevo, Keycafe, Lockstate, Miwa, Nest, and Yale Locks to easily coordinate guest entry without the need to wait for guests, hide keys, or manually schedule and send virtual keys. (https://www.airbnb.com/press/news/a...-suite-of-personalized-tools-to-empower-hosts)

Some very big names in locks/digital keys. Kevo is a Kwikset product, owned by HHI (leader in residential locks in US/Canada, the sector of Airbnb hosts (http://www.kwikset.com/about-kwikset/overview.aspx). Yale Locks, global leader, part of ASSA ABLOY with revenues over USD8b/year (http://www.yalelock.com/en/yale/com/about-yale/)