Australia voted to ban social media for kids under 16. But how tech companies should comply with the new law remains a big question.

Software testers hired by Australia's government to determine how to enforce the world's first national teen social media ban have worked on defence and election contracts but will use another experience to guide their study: wrangling their own children online.

Australia is set to become the first country to ban social media for under-16s after its Senate approved new legislation which X-owner Elon Musk has suggested is a "backdoor way to control access to the Internet.