| http://www.w3.org/ns/prov#value | - London-based CardSwitch said it already holds patents on systems that allow credit and debit cardholders not only to turn their cards on or off, but also to limit the types of products and services that can be purchased with a card, the geographic areas where a card could or could not be used, whether or not a card could be used only online or never online, and even set purchase limits for a card.
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