Method and system for measuring perspiration

A method of using a smart device and a sensor patch placed on a surface of a user to determine one or more properties of perspiration from the user, the method comprising:

• causing the smart device to interrogate a near field communication circuit of the sensor patch;
• executing a function on the smart device to obtain at least one image of the sensor patch based on data sent from the near field communication circuit in response to the interrogation;
• analyzing the at least one image to determine a volume of the perspiration, a rate of the perspiration, one or more components within the perspiration, or a combination thereof and determining a first length of a color change within a perspiration channel of the sensor patch;
• comparing the first length of the color change with a second length of the color change within the perspiration channel of the sensor patch from analysis of at least one other image of the sensor patch;
• and
• determining the rate of the perspiration based on the comparison of the first length to the second length.

A method of using a smart device and a sensor patch placed on a surface of a user to determine one or more properties of perspiration from the user, the method comprising:

• causing the smart device to interrogate a near field communication circuit of the sensor patch;
• executing a function on the smart device to obtain at least one image of the sensor patch based on data sent from the near field communication circuit in response to the interrogation;
• and
• analyzing the at least one image to determine a volume of the perspiration, a rate of the perspiration, one or more components within the perspiration, or a combination thereof, wherein the analysis comprises determining a first length of a color change within a perspiration channel of the sensor patch and determining the volume of perspiration based on a volume of the perspiration channel and the first length of the color change.