FIELD: physics; data transmission.
SUBSTANCE: invention relates to smart cards made in the form of rings and operating on NFC wireless data transmission technology. Contactless smart card in the form of a ring comprises a connected frame antenna with a microchip on a conductive pad supporting NFC technology, and a one-piece housing, in which on the side intended for abutment to the finger a rectangular recess is made with a height of not more than 5.0 mm and a depth of not more than 1.5 mm, containing an antenna with a microchip and sealed along its height, note here that thickness of body ledges above recess varies from 1.0 to 1.5 mm.
EFFECT: use of the invention reduces weight and size characteristics of the ring with a solid body and a recess on the inner side while maintaining operability of the resonant circuit of the smart card and protection of its components from external mechanical effects.
1 cl, 3 dwg
