(HFTP) An integrated door lock system is part of the GUESTROOM 20X project, now in its fourth iteration.
Hotels Embrace High-Tech Features for Tomorrow's Guest Rooms
Delicious Reddit

JUNE 25, 2012
A. Pawlowski, MSNBC

Your smartphone already acts as a boarding pass, a flight tracker and a travel guide, now get ready for it to transform into a hotel room key – no pesky key cards required.
Read the story: travelkit.msnbc.msn.com
HFTP-HITEC: www.hftp.org/Pages/Events/HITEC
Learn more about the GUESTROOM 20X project: www.hftp.org/Content/Forms/GR20X