Sorry to **** on anyone's bonfire but you don't need the cardholder to be present or have the 3 digit code to process credit/debit card transactions, the retailer won't have the whole card number either, just the first four and last four digits to prevent fraud. Pity really, in the good old days when the whole number and expiry date appeard on the retailer receipt you could back charge extra amounts onto rude customers cards, those were the days.