I built a gadget to keep my kids off screens. Paul McCartney invested 3 times.

Ben Drury invented the Yoto player. Courtesy of Ben Drury Ben Drury noticed a stroller with a tablet holder while shopping for his oldest. He had a visceral reaction to that and started prototyping an audio player with no screen. Paul McCartney was an early investor in the business, which has reached millions of kids. This as-told-to essay is based on a conversation with Ben Drury, cofounder and CEO of Yoto. It has been edited for length and clarity. My company wouldn't exist without my kids.…