Channel 4 is making All 4 accounts mandatory early next year
 

Channel 4 is going the way of the BBC early next year, when it will begin forcing users to sign up for an All 4 account in order to access the catchup service. No doubt, like the BBC, this will give Channel 4 the opportunity to better tailor the All...

https://www.engadget.com/2017/11/15/...-targeted-ads/