In this paper we will discuss the design and inner workings of the Onity HT lock system for hotels. Approximately ten million Onity HT locks are installed in hotels worldwide. This accounts for over half of all the installed hotel locks and can be found in approximately a third of all hotels.We hope to reveal unique insight into the way the Onity HT system works and detail various vulnerabilities therein.
Where by “reveal vulnerabilities” he really means “blow the doors off of hotel security”.
via I, Hacker.