Sorry to say, B&Q are not the most IT literate company I have ever come across and suspect they will be among the last to deploy something like this.
Having said that, Robert is fun but just a demo and way too expensive for everyday use - great concept though and the same logic in an app on your phone or a screen on your trolley (think of the Waitrose handheld scanners) and you have the same solution in an affordable manner. Google Now probably provides 95% of the solution already...
Personally, I can't wait...