Enabling smartwatches to sense dehydration and skin health from sweat

We developed “pH watch” - consisting of a custom-made sweat pH sensor and a very low-compute pH sensing algorithm which can be easily integrated into existing fitness trackers or smartwatches which already have a built-in pulse oximeter. pH Watch can simultaneously monitor the pH value of a user’s sweat, along with heart rate and blood oxygen saturation values in real-time, with about 90 per cent accuracy. This aids in real-time and non-invasive skin health and dehydration sensing.

Our work was also published in Mobisys 2019.

pH watch (Mobisys’19)