Hilton will let you use your phone as a hotel room key
 

Starwood isn't the only hotel chain that wants you to use your smartphone as a hotel room key; Hilton is launching an initiative that lets you use your Android or iOS device to control virtually every aspect of your stay. Later this summer, a Hilton...

http://www.engadget.com/2014/07/28/h...=rss_truncated