Disclosed is a device for storing elements each including a first wireless communication unit, the device including: —a receiving support receiving the elements; —a second wireless communication unit generating waves and communicating with each first unit according to a communication protocol, a communication zone being a three-dimensional zone in which the second unit communicates with each first unit when each first unit is located in the zone and does not communicate with a first unit when the first unit is located outside the zone; —a waveguide able to guide the generated waves so that a dimension of the communication zone is strictly greater than a reference dimension, the reference dimension being equal to the dimension of the communication zone when the storage device is without waveguides.