I would imagine that it uses a keyfob system that is harder to duplicate than just getting a key cut and easier to revoke access to than changing a lock. See t

I would imagine that it uses a keyfob system that is harder to duplicate than just getting a key cut and easier to revoke access to than changing a lock. See this news story for an example of this type of lock in action: http://www.cbc.ca/news/canada/british-columbia/airbnb-guest-locked-out-of-suite-by-strata-1.3786500 http://www.cbc.ca/news/canada/british-columbia/airbnb-guest-...