The way this works is naturally by using the age that users provide when signing up for the service. But beyond that, Instagram says it also relies on machine learning tech to predict people’s age, probably in the event of dishonesty on that front.
For now, there’s no word on when Instagram will be pushing these features out. The company says that it will be rolling them out in some countries this month, without identifying which countries. For everywhere else, the company says it hopes “to have them available everywhere soon”.