Tablets are everywhere these days -- so much so that bolting one to a shopping trolley isn't even a novel idea. Sainsbury's previously used slates to keep shoppers entertained while ambling the aisles, and now a new trial at a handful of Co-operative Food stores wants customers to get more interactive with trolley-mounted tablets. Unfortunately, they don't sound like they'll spice up your weekly shopping routine much, given the tablets will ask for your feedback on store layout and product selection, as well as solicit your opinions on "a series of societal issues" like sustainable food. Basically, it fires market research questions at you. Beyond the novelty factor, we doubt many shoppers will be interested in completing a survey while they're struggling to find a ripe avocado, but at least it's something to keep the kids distracted.