Mastercard 規定在免費試用後 (實體物品)，需要另外再讓使用者再同意一次才能開始收訂閱費用：「Free Trials Without The Hassle」。
The rule change will require merchants to gain cardholder approval at the conclusion of the trial before they start billing. To help cardholders with that decision, merchants will be required to send the cardholder – either by email or text – the transaction amount, payment date, merchant name along with explicit instructions on how to cancel a trial.
新聞一開始出來時其實讓蠻多人關注的，因為一堆網路服務都是靠這招... 所以 Mastercard 在文章後更新說明，目前只有實體物品套用這個規則：
*This blog was updated on January 17, 2019 to clarify that the rule change is applicable to physical products such as skincare, healthcare items etc.