ACTIVATION AND INDICATION OF AN RF FIELD ON A DEVICE INCLUDING A CHIP

摘要

A device includes a main antenna suitable for capturing and transmitting an RF signal, at least one chip containing information and configured to transmit the information via the main antenna in response to an excitation of an external RF signal, and a mechanism for activating and deactivating the main antenna. The device further includes a detection circuit for detecting the presence of the external RF signal, and an indicator circuit, which is connected to the detection circuit so as to indicate the presence.