Patent ID: 8287386

Claim:
An apparatus comprising: a plurality of card devices, each card device of the plurality of card devices comprising: a respective substrate having a front face and a back face; a respective display coupled to the front face of the respective substrate; and a respective power element configured to provide power to the respective first display element and comprising a respective arrangement of first conductive elements configured to generate at least a portion of the power through induction caused by a time varying magnetic field proximate to the respective card device; in which each card device of the plurality of card devices have a combined length, width, and height substantially similar to a playing card, and in which each of the plurality of card devices is configured to display a respective card value for a hand of a game; and a charge device comprising: an arrangement of second conductive elements; and a driver configure to provide a voltage across the second conductive elements so that the time varying magnetic field is generated.