Authentication apparatus, authentication apparatus arrangement, and authentication device

An authentication device, comprising:

• at least one transceiver configured to send and receive millimeter waves, wherein the at least one transceiver has a plurality of antennas;
• wherein at least one first antenna of the plurality of antennas is configured to send and receive millimeter waves of a first frequency;
• and
• wherein at least one second antenna of the plurality of antennas is configured to send and receive millimeter waves of a second frequency;
• and
• a processor that is configured to:
• cause millimeter waves of the first frequency to be sent to an authentication apparatus;
• capture a first resonance strength with respect to the first frequency of a plurality of millimeter wave resonance structures in the authentication apparatus;
• assign a first code value to the captured first resonance strength;
• cause millimeter waves of the second frequency to be sent to the authentication apparatus;
• capture a second resonance strength with respect to the second frequency of the plurality of millimeter wave resonance structures in the authentication apparatus;
• assign a second code value to the captured second resonance strength;
• and
• form a code word that has the first code value and the second code value.

An authentication system, comprising:

• an authentication apparatus, comprising
• a dielectric carrier;
• and
• plurality of millimeter wave resonance structures coupled to the dielectric carrier;
• wherein at least one first millimeter wave resonance structure of the millimeter wave resonance structures has a first resonant frequency, which has a first resonance strength when irradiated at the first resonant frequency;
• and
• wherein at least one second millimeter wave resonance structure of the millimeter wave resonance structures has a second resonant frequency, which has a second resonance strength, which is equal to the first resonance strength or is different from the first resonant strength, when irradiated at the second resonant frequency;
• and
• an authentication device, comprising:
• at least one transceiver configured to send and receive millimeter waves, wherein the at least one transceiver has a plurality of antennas;
• wherein at least one first antenna of the plurality of antennas is configured to send and receive millimeter waves of the first resonant frequency;
• and
• wherein at least one second antenna of the plurality of antennas is configured to send and receive millimeter waves of the second resonant frequency;
• and
• a processor that is configured to:
• cause millimeter waves of the first resonant frequency to be sent to the authentication apparatus;
• capture a first resonance strength with respect to the first frequency of millimeter wave resonance structures in the authentication apparatus;
• assign a first code value to the captured first resonance strength;
• cause millimeter waves of the second resonant frequency to be sent to the authentication apparatus;
• capture a second resonance strength with respect to the second frequency of millimeter wave resonance structures in the authentication apparatus;
• assign a second code value to the captured second resonance strength;
• and
• form a code word that has the first code value and the second code value.