Melinda Gate’s children don’t have smartphones and only use a computer in the kitchen. Her husband Bill spends hours in his office reading books while everyone else is refreshing their home page

The most sought-after private school in silicon valley, the waldorf school of the peninsula, bans electronics devices for the under 11s and teaches the children of ebay, Apple, Uber and Google staff to make go-karts, knit and cook

Mark Zuckerberg wants his daughters to read Dr Seuss and play outside rathen than use Messenger Kids

Steve Jobs strictly limited his children’s use of technology at home