Systems, devices, and methods for improved analyte sensor accuracy and fault detection

An analyte monitoring system, comprising:

• a sensor control device including an analyte sensor, first processing circuitry, and a first non-transitory memory, wherein the analyte sensor includes at least a portion configured to be inserted into a user's body and collect a first data indicative of a glucose level;
• a secondary sensing element configured to collect a second data indicative of a secondary physiological measurement;
• and
• a reader device comprising second processing circuitry and a second non-transitory memory, wherein at least one of the first or the second non-transitory memory includes instructions that, when executed, cause at least one of the first or the second processing circuitry to:
• determine whether the first data conflicts with the second data;
• and
• in response to a determination that the first data conflicts with the second data, terminate at least a portion of the analyte monitoring system or temporarily mask the first data.