System, sensor device, and method for determining differential temperature in body part

A system for determining differential temperature in a body part, the system comprising:

• at least one sensor device comprising
• a base having a first side and a second side opposite to the first side;
• and
• at least one temperature-sensitive element provided on the first side of the base, wherein the temperature-sensitive element is arranged to sense temperatures of different regions of a body part of a user upon contact with the body part of the user for a predefined time period by changing it colour proportionally to the temperature of each region of the body part.
• at least one camera configured to capture at least one image of the first side, wherein the at least one image is captured within a given time period from a time of removal of contact between the first side and the body part;
• and
• at least one processor communicably coupled to the at least one camera, wherein the at least one processor is configured to:
• identify, in the at least one image, at least one image segment representing the at least one temperature-sensitive element;
• recognize pixel values of pixels in the at least one image segment;
• and
• determine the temperatures of different regions of the body part, based on the pixel values of pixels in the at least one image segment, wherein the temperatures of different regions of the body part form a differential temperature profile of the body part.