The invention addresses confounding difficulties involving continuous sweat analyte measurement. Specifically, the present invention provides: at least one component capable of monitoring whether a sweat sensing device is in sufficient contact with a wearer's skin to allow proper device operation； at least one component capable of monitoring whether the device is operating on a wearer's skin； at least one means of determining whether the device wearer is a target individual within a probability range； at least one component capable of generating and communicating alert messages to the device user(s) related to: wearer safety, wearer physiological condition, compliance with a requirement to wear a device, device operation； compliance with a behavior requirement, or other purposes that may be derived from sweat sensor data； and the ability to utilize aggregated sweat sensor data that may be correlated with information external to the device to enhance the predictive capabilities of the device.
