| 主权项 |
1. A first and a second microcircuit card, each card comprising a displayed representation and at least one light-emitting diode provided with a lid, capable of emitting a first predefined color and a near field communications antenna, the antenna and the diode being configured so that the diode emits light when a microcircuit of the card communicates with a card reader at a near field communication frequency through the antenna, wherein the lid of the diode is coated with a mass of material selecting a set of wavelengths from those making up the first color so that the light transmitted by the mass has a second predefined color different from the first color, the at least one light-emitting diode being the same for the first and second cards, the antenna being the same for the first and second of cards, and the material being chosen for each card so that the second predefined color matches a color of the displayed representation of each card, wherein a color of the displayed representation of the first card is different from the color of the displayed representation of the second card, the antenna being formed by an electrically-conducting wire, the light-emitting diode being positioned on, and connected to, a portion of a path of the wire of the antenna, so that the light-emitting diode emits light at a pre-defined near-field current. |
