ConnectED Stand (I saw it there last year as well)
Specialist Schools and Academies Trust Stand
There is no doubt in my mind that this type of technology has massive potential in education. But I still think that many of the concepts on display lacked the pedagogy to make them really valuable in the classroom.
We are going to be doing a Consolarium project using Second Sight for the PSP this year and we also have a few other Augmented Reality projects up our sleeves. So watch this space.