Magnetoelectronic based environmental sensor tag

An electronic environmental sensor tag comprising:

• a resistive sensor circuit configured with a resistance state that is responsive to a presence of a target chemical and/or target environmental condition when exposed to a target environment;
• a transducer coupled to the sensor circuit configured to detect said resistance state and generate an output corresponding thereto;
• a processing circuit coupled to said transducer and including one or more gates having magnetoelectronic devices configured to perform a first sequence of operations during an operational mode on said output from said transducer;
• wherein a detection output is generated by the processing circuit having a detection value based on said first sequence of operations confirming the presence of said target chemical and/or target environmental condition;
• wherein the magnetoelectronic devices in the processing circuit are normally dormant and do not consume power;
• a non-volatile memory coupled to said processing circuit for storing said detection value;
• wherein said non-volatile memory is configured to be powered and provide an output of said detection value in response to an incident interrogation radiation signal;
• a readout circuit coupled to the non-volatile memory and including a near field antenna element for communicating said detection value to a separate external reader device;
• wherein said readout circuit is configured to be powered by said incident interrogation radiation signal to enable passive readout of said detection value.