Temperature plays a crucial role in preterm infant's life thus it is very important to monitor it accurately.
Temperature is also also used for feedback in the PID system to know when to power the heating element.

The site for measurement of temperature we have chosen is the armpit since it is standard testing site.

We have used the LM35 temperature sensor for it's accuracy and simplicity also because I coincidentally had a 3 channel fabric cable.

The sensor gives a proportional output voltage to temperature. The accuracy is only limited by the resolution of the ADC.
The particle photon however has a 12 bit ADC, By using the 5V Vin supply we were able to get accurate temperature data.

Here is the final appearance of the sensor

Due to the use of a textile cable for wiring we can comfortably monitor temperature.