Abstract: A food container including a first and a second element for the containment of food, such as pizza, made by the same mold and including a respective base with a tapered relief edge or side wall on the outer perimeter, with at least one projecting profile and at least one valley alternating on it. Furthermore, on the relief tapered edge or side wall there are circular sectors of different sizes and having, respectively, at least one beak-shaped joint and at least one hole, with a shape suitable to contain the joint. In addition, the container includes, preferably, on the entire perimeter of the element an innovative interlocking coupling system that allows a reduced height.

Abstract: A device for secure short-range point-to-point radiocommunication, comprising: first transceiver apparatus for transmission and/or reception of a first EM beam with a non-zero Orbital Angular Momentum OAM value (l10); additional transceiver apparatus for transmission and/or reception of at least one additional EM beam which is co-polar and isofrequential with the first beam that can be generated by the first apparatus and with value (l20; l30) of the topological charge of the OAM different from the OAM topological charge value (l10) of the beam transmittable and/or receivable by the first transceiver apparatus; a first and a second data channel being associated with a respective carrier comprising said first and said at least second EM beam, respectively, thereby forming a high-security physical substrate preventing interception of the radiocommunication information content; wherein the device is included: in a security card, or in a reader device for a security card, or in a portable multimedia device, or in