Hi HN,
this is Jakub - Founder of Estimote (YC S13).
FastCo Design did a great piece of our new product.
It's essentialy a Bluetooth beacon powered by USB.
Thanks to HDMI port it can be connected to any TV or digital display and it scans for BLE signals.
People with mobile apps broadcast these signals and can influence content of screens around.
You can read more how it works here: http://blog.estimote.com/post/150398268230/launching-estimot...
Will be more than happy to answer any questions here.
