The EU's new data privacy law (GDPR) allows you to withdraw consent, and "it must be as easy to withdraw consent as to give it". A perfectly clear and powerful

The EU's new data privacy law (GDPR) allows you to withdraw consent, and "it must be as easy to withdraw consent as to give it". A perfectly clear and powerful way to describe what is wanted. "It must be as easy to cancel a subscription as to subscribe" would a similar, effective way to do it here.