Biosensor and its use to indicate the status of a product

A biosensor, comprising one unit of the circuit, wherein the device comprises a substrate and enzyme, wherein the enzyme and substrate with for affecting the substrate, wherein the substrate the conductive as a time and temperature of the reducing. The unit and a component is wherein, in the circuit, and a exerted an electric field of the magnetic field of the circuit of the drive circuit, that is executed of the electric circuit's the total measurable of signal. The present invention also relates to the use of the method for biosensor, one of the biosensor's label and method for using the biosensor display product that the method.