I've talked about Hypertag before HERE . A great concept and looks like they are implementing.
From NetImpertaive.com Hypertag beings global expansion .
Mobile marketing technology company Hypertag has begun the first phase of its global expansion with the announcement of four international partnership deals.
Hypertag , offers Hypertags, are short-range wireless devices, which send information to mobile phones via infra-red or Bluetooth
Some THINGS Hypertag can do.