Patent ID: 9691013
Date: 2017-06-27
CPC Classifications: G06K

Claim:
1. An electronic circuit of a microprocessor of a proximity document, comprising: a microprocessor; a transceiver antenna; and a touch switch, where the touch switch comprises an active graphene element, and a switch contact that is led to a surface of the proximity document and so electrically connected to the microprocessor and the antenna so that touching the switch contact closes a circuit and allows communication between the microprocessor and the antenna, while in an opposite case the circuit is opened, and the communication between the microprocessor and the antenna is not possible; where the active graphene element comprises a two-dimensional form having a thickness of one atom or more than one atom or three dimensional and preferably the graphene layer comprises a multiplicity of nanotubes arranged in a plurality of different directions, in particular parallel or perpendicular to a surface of a polymer.