http://www.networkworld.com/news/2013/052813-ctia-roundup-270178.html … size of two 25-cent pieces stacked on top of each other. You stick the device to an object and then track it and find it using an app on your iOS or Android smartphone.
May 2013 archive
May 07
Staples Enters 3D World With ‘Cube’ Printer
http://www.youtube.com/watch?v=uiv6ENR2bFQ http://cubify.com/