Could we have one that does not function on Shabbat, just in case one of the faithful is tempted.

B"H There are specific conditions when a credit card is usable on Shabbos, to save someone's life for instance. Do not blame the tools for lack of Shabbos observance. But the option to turn it off on Shabbos I also think would be a great offering for those who want to keep their kids from spending on days they should not. In fact, the ability to schedule allowance .... the posibilities are endless!

This card should be used by ultra left wingers that cant believe that funds sent to Palestinians by Europeans are used to buy weapons to kill Jews. (KarinA)