Abstract: This invention relates to a novel electronic case for carrying credit cards and the like. More particularly, this invention pertains to a novel electronic case which accounts for the credit cards held in the case and sounds an alarm and activates an alert light if one or more of the cards is missing from the case. A portable electronic card carrying case comprising: (a) a case which can be opened to reveal the interior of the case, and closed to conceal the interior of the case; (b) at least one card receptacle housed in the interior of the case; (c) a power supply associated with the case; (d) a microprocessor associated with the case, the microprocessor being powered by the power supply; (e) an electronic sensor powered by the power supply and monitored by the microprocessor, and adapted to detect the presence or absence of a card in the card receptacle; and (f) an alarm which is activated when a card is not returned to its card receptacle, and the case is closed.