New Hologram assistant

I was in Kings Cross station this morning and the M&S Food store had a Hologram Assistant outside near where the baskets are.
I cannot find the one I saw online, but I have found some youtube videos of the technology in use.

It looked really good and works pretty well! Certainly the future (or we have at least caught up with the future).

https://www.youtube.com/watch?v=_C-bCFPJaEs

*EDIT*

Found the developers website here: http://www.tensator.com/uk/showroom/...assistant.aspx