Hotels' smartphone apps let travelers bypass check-in, unlock doors - San Jose Mercury News
A good article on the current status of mobile check in;
Starwood on Monday became first chain to allow guests to unlock their doors with smart phones (10 props, expanding to 140 by mid year)
Hilton plans on rolling out to 250 properties by end of '15
Marriott not yet, but booked 1.25 billion in mobile bookings last year
Hilton and Marriott plan on mobile booking for all properties next year - more than 8,000 hotels
I guess I better get with the program - soon, like many restaurants and other retailers, mobile only deals will be offered - oh my