In five years, they have mastered the codes of Facebook, WhatsApp and TikTok. Brands are starting to ride this new craze.

“My children tend to get annoyed today when they see me on my phone at the table or watching a movie, it’s the world turned upside down!, plague Édouard*. “I spend an hour on it, maybe two on certain days,” confides Ethel*, 63, who has seen her daily life disrupted since her retirement just a year ago.