One of the most recent developments in wearable technology is the invention of Google Glass by Google, it is simply a pair of glasses that you wear that provide the user with many more opportunities to entertain themselves from their surroundings. This is invention is expected to be released this year! The link I have provided explains all the ornate applications included in Google Glass!
The mouse and keyboard are no longer the only way to input data into computing devices. This trend capitalizes on touch interfaces as made popular by the itouch/ iphone as well as the gesture based interfaces made popular by the Wii. Additionally, sixth sense computing (as seen in Minority Report) is a reality as this has already been invented.
These links are from the Horizon Report 2010 and will be used by students in the NetGenEd project to understanding Gesture Based computing
This is information on QR codes for Marketing but in this there is potential for schools - particularly ubiquitous "hardlinks" between educational experiences like museums.