> This completely changes the game on all kinds of fraud, not just ad fraud. Getting around a ban is not Fraud. Regardless, a cross app ad identifier is not n

> This completely changes the game on all kinds of fraud, not just ad fraud. Getting around a ban is not Fraud. Regardless, a cross app ad identifier is not needed to prevent this. There are ways within your app to save data per iOS user (this is not cross app data, it's specific to your app) which would allow you to prevent this. You could use sign in with Apple/ Google/ Facebook. You could require emails. etc etc.