This is a pretty useful feature. But does it run afoul of some mysterious rules that allow recurring charges to continue[1], when you have a tradtional card cancelled and reissued under a new number?
From[2]:
> Thanks to some under-the-radar rules that work out in favor of vendors who charge recurring card fees, most credit card carriers allow a "recurring indicator" to be included in vendor/customer credit card transactions. In layman's terms, that means there are data bytes in your credit card payment DNA that allows companies to bypass credit card expiration dates and keep charging you anyway, even if your card has expired.
> Worse, there are loopholes in credit card regulations that enable vendors to get new credit card information if the old card was closed due to fraud, or even if you switched cards for a better rate. In either case, the recurring charges continue.
[1] https://uncrunched.com/2012/08/01/recurring-credit-card-char...
[2] http://www.nasdaq.com/personal-finance/pull-the-plug-on-recu...