Computer giant Apple will refund customers whose children racked up charges buying virtual pet food, gems or other items while playing games on their iPhones and iPads.
The refund agreement settles a complaint by the US Federal Trade Commission over children spending millions of dollars for in-app purchases, often without parental knowledge or consent.
Apple failed to informed parents that entering the password started a 15-minute clock during which kids could make unlimited purchases without any further action by an adult.
The settlement involves all apps in which children made unauthorised purchases.
Apple will pay out at least the equivalent of 24 million euros to affected customers.