An apparatus, method and computer program for scrambling an identification signal using quantum dot-graphene field effect transistors

An apparatus comprising:

• a plurality of quantum dot-graphene field effect transistors;
• circuitry configured to provide a drain-source bias voltage to a plurality of quantum dot-graphene field effect transistors, wherein the drain-source bias voltage is individual to ones of said plurality of quantum dot-graphene field effect transistors, and wherein different individual drain-source bias voltages have different parameters, to enable the plurality of quantum dot-graphene field effect transistors to detect light from a user of an apparatus;
• and
• circuitry configured to obtain output signals from the plurality of quantum dot-graphene field effect transistors where an associated output signal of a quantum dot-graphene field effect transistor is dependent upon both the light detected by the quantum dot-graphene field effect transistor and the parameters of the drain-source bias voltage of the quantum dot-graphene field effect transistor, to enable the obtained output signals to be used as a scrambled identification signal of the user of the apparatus.

An identification device comprising an apparatus, said apparatus comprising:

• a plurality of quantum dot-graphene field effect transistors;
• circuitry configured to provide a drain-source bias voltage to a plurality of quantum dot-graphene field effect transistors, wherein the drain-source bias voltage is individual to ones of said plurality of quantum dot-graphene field effect transistors, and wherein different individual drain-source bias voltages have different parameters, to enable the plurality of quantum dot-graphene field effect transistors to detect light from a user of an apparatus;
• and
• circuitry configured to obtain output signals from the plurality of quantum dot-graphene field effect transistors where an associated output signal of a quantum dot-graphene field effect transistor is dependent upon both the light detected by the quantum dot-graphene field effect transistor and the parameters of the drain-source bias voltage of the quantum dot-graphene field effect transistor, to enable the obtained output signals to be used as a scrambled identification signal of the user of the apparatus.

A method comprising:

• providing a drain-source bias voltage to a plurality of quantum dot-graphene field effect transistors, wherein the drain-source bias voltage is individual to ones of said plurality of quantum dot-graphene field effect transistors, and wherein different individual drain-source bias voltages have different parameters, to enable the plurality of quantum dot-graphene field effect transistors to detect light from a user of an apparatus;
• obtaining output signals from the plurality of quantum dot-graphene field effect transistors, where an associated output signal of a quantum dot-graphene field effect transistor is dependent upon both the light detected by the quantum dot-graphene field effect transistor and the parameters of the drain-source bias voltage of the quantum dot-graphene field effect transistor;
• and
• using the obtained output signals as a scrambled identification signal of the user of the apparatus.