From what I understand, no personal information is stored on hotel key cards. It's linked to the info on the main reservation computers when it gets swiped. So I'm not sure RFID keys are a security issue. From the video clip, the scanned info from RFID credit and debit cards are then transferred to key cards with magnetic strips. Seems like a non-issue for key cards but a huge threat for the plastic bank cards.

Valley View, Aria, and the local Andaz hotels have known RFID keys. I think a lot of international hotels use/used some sort of chips in their keys?