Device for detecting identification elements with relaying metasurface(s), for a system

A detection device for a system comprising a closed space with a metallic environment with at least one object within the closed space, the object being provided with a wave-transmitting/receiving identification element, said detection device comprising:

• an identification reader adapted to exchange messages with said identification element via at least one wave-transmitting/receiving antenna, said at least one wave-transmitting/receiving antenna being adapted to be installed in said closed space in order to detect the presence of said identification element, and
• at least one metasurface adapted to be installed in said closed space and configured in such a way as to reflect, according to at least one first-chosen law, waves that originate from said antenna and which are intended to be received by said identification element and to reflect, according to at least one second-chosen law, waves that originate from said identification element and which are intended to be received by said antenna,
• wherein each metasurface is configurable, each metasurface comprising a computer comprising at least one processor and at least one memory, said at least one processor and at least one memory being configured to perform operations of determining each first law and each second law as a function of said metallic environment and of a configuration of said closed space, then of determining each configuration of said configurable metasurface according to said first and second determined laws, and then of triggering an establishment of each configuration by said configurable metasurface.