Actually want to use. and here in this concept store called cornershop, a bluetooth beacon recognises that you have arrived via your smartphone, which will effectively then become your remote control for the store. now i come to the grocery counter, where i could have preselected what i wanted in the app and then it will just work as a click and collect. but if i wanted to have a browse, see what i might fancy, then i can do that on these screens, or by using the app. on a small shelf like this, the benefit isn't going to be huge. but when this shoreditch store opens next month, it's set to be...