Abstract: The application relates to a receptacle comprising a plurality of inside pockets for holding objects, each of which is equipped with an RFID or NFC chip. At least two surfaces of the receptacle which include at least one of the plurality of inside pockets are provided with an electrically conductive layer so that the at least one of the plurality of inside pockets is shielded from electromagnetic radio waves by the at least two surfaces.

Abstract: The invention relates to a body (10) having at least one surface (12) over which a fluid (30) can flow, said surface having a global course that defines a main flow direction (14) over the surface (12) at least partially has a structure for reducing a flow resistance of the body (10), the structure having at least one recess (16.2 . . . 16.3) provided with a substantially circle-segment-shaped cross-section for inducing a fluid eddy (26.2) . . . 26.3). The body is characterized in that the structure has at least one lead-in section (18.2 . . . 18.3), which is angled from the main flow direction in the direction of the recess (16.2 . . . 16.3) and which is arranged upstream of the recess (16.2 . . . 16.3) in the main flow direction, for leading a fluid flow (24) into the recess (16.2 . . . 16.3). By means of the structure, a fluid eddy (26.2 . . . 26.3) can be induced within the recess (16.2 . . . 16.3) and can be localized substantially within the recess (16.2 . . . 16.3).