In-Store GPS

Sainsbury's just announced that is trialing an in-store GPS app that will let you build up a shopping list and then navigate in any store right to your product. And then navigate straight out again, paying our basket through the app, again. 

This would be a massive movement to in-store convenience, focused on two of shoppers' main complaints - "I cannot find my product" and "I lose too much time in store". But it puts special pressure on impulse shopping and, thus, margins of retailers. They will need to make sure that they move impulse shopping out of the shelves and into the app - which is nothing new, if you remember what Amazon does all the time with their suggestions...