An independent trial evaluated ways to verify ages including matching people with documents provided and estimating someone's age based on physical features and hand movements.
More than 60 tools were assessed as part of the trial, which found technology could be used successfully to prevent Australians accessing explicit and inappropriate content.
Available technologies could ensure age assurance was done "privately, efficiently and effectively" with appropriate limitations.
"Age assurance can be done in Australia," the experts wrote in a final report published on Monday.
Systems were "generally secure and consistent with information security standards" and could handle prickly issues including AI-generated spoofing and forgeries, members of the Age Check Certification Scheme said.
"However, the rapidly evolving threat environment means that these systems - while presently fairly robust - cannot be considered infallible," they found.
The report warned unnecessary data retention could occur as tech giants anticipated future regulation.
"We found some concerning evidence that in the absence of specific guidance, service providers were apparently over-anticipating the eventual needs of regulators about providing personal information for future investigations," it said.
This could lead to increased risk of privacy breaches due to unnecessary and disproportionate collection and retention of data.
The trial was launched after the federal government announced a social media ban for people younger than 16, which will come into effect in December.
Communications Minister Anika Wells said the findings showed there were effective methods that could be used by social media platforms to enforce age limits.
Tech giants could be fined up to $49.5 million for failing to prevent people under 16 from having an account on an age-restricted platform.
The ban captures social media platforms Facebook, Instagram, X , TikTok, YouTube and Snapchat.
"The Albanese government is on the side of families and we're pushing forward with our mission to keep kids safer online through world-leading reforms," Ms Wells said.
"This report is the latest piece of evidence showing digital platforms have access to technology to better protect young people from inappropriate content and harm.
"While there's no one-size-fits-all solution to age assurance, this trial shows there are many effective options and importantly, that user privacy can be safeguarded."
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