Get the latest tech news
Who's trying to buy TikTok?
Could there be ways to bypass the ban - and could president-elect Donald Trump find a way to stop the law?
And even if people did use a VPN, TikTok could theoretically look at a user's device and identify whether their mobile number starts with a +1, to discern whether they are based in the US, and then simply present them with a screen saying the app is not available in their country. Professor Milton L. Mueller of the Georgia Institute of Technology - who filed a legal brief in support of TikTok - said a lack of clarity around how far the US could extend its authority to enforce the law makes knowing what technically happens if a ban goes ahead difficult to determine. The government would be effectively telling Apple and Google that they won't be punished for continuing to allow access to TikTok, meaning the law would remain in place but would essentially be redundant.
Or read this on BBC News