"Physical Location + User Identification"
"Tracking people in physical space.
to piece together online and offline experiences."

"As some flows start online, move off line . or whatever the case may be"

-Nigel Warren

iBeacon
http://en.wikipedia.org/wiki/IBeacon
http://techcrunch.com/2013/12/04/ibeacons-used-to-deliver-location-based-access-to-ios-newsstand-publications/
used in apple stores.
also used in a bar in

Shopkick
http://www.shopkick.com/

Magicbands at Disney
https://disneyworld.disney.go.com/plan/my-disney-experience/bands-cards/