An EU directive on 'cookies' - small pieces of text stored on a user's computer by a web browser - will dictate that web users must give 'explicit consent' to have their details gathered by the cookies.
Cookies are widely used to help users navigate faster around sites they visit regularly, but they've also become key drivers in the battle by marketing companies to monetise content. Cookies that log what people have put in online shopping baskets are excluded by the directive.
The exact steps that businesses have to go through to comply with the law and gain consent from customers and users are currently being drawn up by the Department for Culture, Media and Sport (DCMS).
He says by forcing users to opt in to get cookies and having to provide detailed instructions on how to remove them will cripple the internet.
And online chat networks say that cookies play a key role in protecting children and vulnerable people from troublemakers.