Three out of four children under-five now has access to a tablet, smartphone or computer, according to a study. Market researcher Childwise asked more than 1,000 UK parents about their pre-schooler offspring's media habits. It said three-quarters of the children had access to a connected device and most of the three- and four-year-olds had their own tablet or PC. The BBC's Cbeebies was the children's favourite channel and YouTube the most popular app. But their tastes were becoming more diverse, Childwise added.