Social media companies already have to navigate age checks in Australia, with a law requiring them to bar access to under-16s.

France's parliament is weighing a social media ban for users under 15, following in the footsteps of Australia and Indonesia, although enforcement authorities face a puzzle over how to manage age checks.

Here are the main methods currently available to check users' ages:

Government ID

The most obvious solution is providing a scan of a passport, driver's license or other official identity document.