Abstract: A method and apparatus are provided for indicating proximity between a first communications device, called a detector device corresponding to an electronic card case, and a second communications device called a device to be detected. The method is implemented in a proximity indicating module attached to the detector device. The method includes at least one iteration of the following acts: receiving at least one signal sent out by the device to be detected; determining, from the received signal, at least one indication of proximity between the device to be detected and the detector device; generating at least one sound signal and/or vibration signal representing the determined indication of proximity; and sending the generated sound and/or vibratory signal.